diff --git a/packages-user/client-base/src/index.ts b/packages-user/client-base/src/index.ts
index afd1253..e72f62d 100644
--- a/packages-user/client-base/src/index.ts
+++ b/packages-user/client-base/src/index.ts
@@ -6,3 +6,6 @@ export function create() {
 
 export * from './load';
 export * from './material';
+export * from './save';
+
+export * from './types';
diff --git a/packages-user/client-base/src/save/index.ts b/packages-user/client-base/src/save/index.ts
new file mode 100644
index 0000000..213e667
--- /dev/null
+++ b/packages-user/client-base/src/save/index.ts
@@ -0,0 +1,2 @@
+export * from './system';
+export * from './types';
diff --git a/packages-user/data-common/src/save/system.ts b/packages-user/client-base/src/save/system.ts
similarity index 98%
rename from packages-user/data-common/src/save/system.ts
rename to packages-user/client-base/src/save/system.ts
index 1501a70..08e6cc6 100644
--- a/packages-user/data-common/src/save/system.ts
+++ b/packages-user/client-base/src/save/system.ts
@@ -4,11 +4,10 @@ import {
     IGlobalTrasaction,
     ISaveRead,
     ISaveSystem,
-    ISaveSystemConfig,
-    ISaveableContent,
-    SaveCompression
+    ISaveSystemConfig
 } from './types';
 import { isNil } from 'lodash-es';
+import { SaveCompression, ISaveableContent } from '@user/data-common';
 
 interface ISaveRecord {
     /** 存档 id */
diff --git a/packages-user/client-base/src/save/types.ts b/packages-user/client-base/src/save/types.ts
new file mode 100644
index 0000000..fef7ffd
--- /dev/null
+++ b/packages-user/client-base/src/save/types.ts
@@ -0,0 +1,142 @@
+import { Dexie, Table } from 'dexie';
+import { SaveCompression, ISaveableContent } from '@user/data-common';
+
+export interface IGlobalTrasaction {
+    /** 全局存储对应的表 */
+    readonly table: Table<unknown, string>;
+
+    /**
+     * 获取指定键值对应的数据
+     * @param key 全局键值
+     */
+    get<T>(key: string): Promise<T>;
+
+    /**
+     * 设置指定键值存储的数据
+     * @param key 全局键值
+     * @param value 存储数据
+     */
+    set(key: string, value: unknown): Promise<void>;
+}
+
+export interface ISaveSystemConfig {
+    /** 自动存档使用的压缩等级 */
+    autosaveLevel: SaveCompression;
+    /** 普通存档使用的压缩等级 */
+    commonSaveLevel: SaveCompression;
+    /** 可容忍的最大存档耗时，超过此值会抛出警告 */
+    saveTimeTolerance: number;
+    /** 可容忍的最大自动存档耗时，超过此值会抛出警告 */
+    autosaveTimeTolerance: number;
+    /** 自动存档栈最大大小 */
+    autosaveStackSize: number;
+}
+
+export interface ISaveRead {
+    /** 该存档的压缩等级 */
+    readonly compression: SaveCompression;
+    /** 该存档的数据 */
+    readonly data: Map<string, unknown>;
+}
+
+export interface ISaveSystem {
+    /** Dexie 数据库 */
+    readonly db: Dexie;
+
+    /**
+     * 初始化存档数据库
+     * @param name 数据库名称
+     */
+    init(name: string): void;
+
+    /**
+     * 配置此存档系统
+     * @param config 配置对象
+     */
+    config(config: Readonly<Partial<ISaveSystemConfig>>): void;
+
+    /**
+     * 从 `undo` 栈读取上一个自动存档，然后将当前状态加入 `redo` 栈
+     * @param current 当前游戏状态，需要加入 `redo` 栈
+     */
+    undoAutosave(
+        current: Map<string, ISaveableContent<unknown>>
+    ): ISaveRead | null;
+
+    /**
+     * 从 `redo` 栈读取自动存档，并将当前状态加入 `undo` 栈
+     * @param current 当前游戏状态，需要加入 `undo` 栈
+     */
+    redoAutosave(
+        current: Map<string, ISaveableContent<unknown>>
+    ): ISaveRead | null;
+
+    /**
+     * 获取当前的撤回栈
+     */
+    getUndoStack(): ISaveRead[];
+
+    /**
+     * 获取当前的重做栈
+     */
+    getRedoStack(): ISaveRead[];
+
+    /**
+     * 进行自动存档，加入撤回栈
+     * @param state 状态对象
+     */
+    autosave(state: Map<string, ISaveableContent<unknown>>): void;
+
+    /**
+     * 将 `undo` 栈顶的自动存档真正存入 `IndexedDB`
+     */
+    saveAutosaveToDB(): Promise<void>;
+
+    /**
+     * 将状态对象存入存档
+     * @param id 存档 id，用于建立存档索引及查询
+     * @param state 状态对象
+     */
+    save(
+        id: number,
+        state: Map<string, ISaveableContent<unknown>>
+    ): Promise<void>;
+
+    /**
+     * 根据 id 读取指定存档
+     * @param id 存档 id
+     */
+    load(id: number): Promise<ISaveRead | null>;
+
+    /**
+     * 删除指定存档
+     * @param id 存档 id
+     */
+    deleteSave(id: number): Promise<void>;
+
+    /**
+     * 获取最后一次存档的存档栏位
+     */
+    getLastSlot(): Promise<number>;
+
+    /**
+     * 获取指定键值对应的全局存储
+     * @param key 全局键值
+     */
+    getGlobal<T>(key: string): Promise<T | null>;
+
+    /**
+     * 设置指定键值对应的全局存储
+     * @param key 全局键值
+     * @param value 存储数据
+     */
+    setGlobal(key: string, value: unknown): Promise<void>;
+
+    /**
+     * 进行全局存储的事务处理，适用于多内容查询与设置，当出现错误时其中的任何写入操作都不会真正存储
+     * @param handle 事务处理函数
+     */
+    startGlobalTransaction<R>(
+        handle: (transaction: IGlobalTrasaction) => PromiseLike<R>
+    ): Promise<R>;
+}
diff --git a/packages-user/client-base/src/types.ts b/packages-user/client-base/src/types.ts
new file mode 100644
index 0000000..6878bf8
--- /dev/null
+++ b/packages-user/client-base/src/types.ts
@@ -0,0 +1,12 @@
+import { ISaveSystem } from '@user/data-common';
+import { ICoreState } from '@user/data-state';
+
+export interface IClientBase extends ICoreState {
+    /** 存档系统 */
+    readonly save: ISaveSystem;
+}
+
+export interface IClientBaseExtended {
+    /** 当前对象的渲染端基本层对象（Layer 4 对象） */
+    readonly state: IClientBase;
+}
diff --git a/packages-user/client-modules/src/client.ts b/packages-user/client-modules/src/client.ts
index 14b538a..1a579aa 100644
--- a/packages-user/client-modules/src/client.ts
+++ b/packages-user/client-modules/src/client.ts
@@ -1,4 +1,4 @@
-import { ICoreState } from '@user/data-state';
+import { CoreState } from '@user/data-state';
 import { IClientCore } from './types';
 import {
     IMotaAudioContext,
@@ -15,7 +15,9 @@ import {
     IAutotileProcessor,
     MotaAssetsLoader,
     MaterialManager,
-    AutotileProcessor
+    AutotileProcessor,
+    ISaveSystem,
+    SaveSystem
 } from '@user/client-base';
 import {
     IMapRenderer,
@@ -41,9 +43,12 @@ import {
 import { loading } from '@user/data-base';
 import { fallbackLoad } from './fallback/load';
 
-export class ClientCore implements IClientCore {
-    readonly loader: IMotaAssetsLoader;
+export class ClientCore extends CoreState implements IClientCore {
+    // Layer 4 渲染基础层
+    readonly save: ISaveSystem;
 
+    // Layer 5 渲染顶层
+    readonly loader: IMotaAssetsLoader;
     readonly materials: IMaterialManager;
     readonly autotile: IAutotileProcessor;
 
@@ -57,7 +62,14 @@ export class ClientCore implements IClientCore {
     readonly soundPlayer: ISoundPlayer<SoundIds>;
     readonly bgmPlayer: IBGMPlayer<BgmIds>;
 
-    constructor(public data: ICoreState) {
+    constructor() {
+        super();
+
+        //#region Layer 4
+
+        this.save = new SaveSystem();
+        this.save.init(`@game/${core.firstData.name}`);
+
         //#region 音频系统
 
         this.audioContext = new MotaAudioContext();
@@ -74,8 +86,8 @@ export class ClientCore implements IClientCore {
         //#endregion
 
         this.loader = new MotaAssetsLoader(
-            data.loadProgress,
-            data.dataLoader,
+            this.loadProgress,
+            this.dataLoader,
             this.audioContext,
             this.soundPlayer,
             this.materials
@@ -114,12 +126,12 @@ export class ClientCore implements IClientCore {
             // 使用分频器，用户可以在设置中调整，如果设备性能较差调高分频有助于提高性能表现
             excitaion: excitationDivider
         });
-        this.mainMapRenderer = new MapRenderer(this.materials, data.maps);
+        this.mainMapRenderer = new MapRenderer(this.materials);
         this.mainMapExtension = new MapExtensionManager(this.mainMapRenderer);
 
         // 兼容层
         loading.once('assetBuilt', () => {
-            this.createMainExtension();
+            this.initMapExtensions();
         });
 
         //#endregion
@@ -128,24 +140,16 @@ export class ClientCore implements IClientCore {
     /**
      * 进行地图渲染拓展初始化
      */
-    private async createMainExtension() {
+    private async initMapExtensions() {
         // 算是一种妥协吧，等之后加载系统重构之后应该会清晰很多
         await this.materials.trackedAsset.then();
 
         this.mainMapRenderer.useAsset(this.materials.trackedAsset);
-        const layer = this.data.maps.getLayerByAlias('event');
-        if (layer) {
-            this.mainMapExtension.addHero(this.data.hero.mover, layer);
-            this.mainMapExtension.addDoor(layer);
-        }
+        // const layer = this.maps.getLayerByAlias('event');
+        // if (layer) {
+        //     this.mainMapExtension.addHero(this.hero.mover, layer);
+        //     this.mainMapExtension.addDoor(layer);
+        // }
         this.mainMapExtension.addText();
     }
-
-    bindDataState(state: ICoreState): void {
-        this.data = state;
-    }
-
-    getDataState(): ICoreState {
-        return this.data;
-    }
 }
diff --git a/packages-user/client-modules/src/core.ts b/packages-user/client-modules/src/core.ts
index 8878f28..8cc1770 100644
--- a/packages-user/client-modules/src/core.ts
+++ b/packages-user/client-modules/src/core.ts
@@ -1,7 +1,6 @@
-import { state } from '@user/data-state';
 import { ClientCore } from './client';
 
 // TODO: 逐渐弱化 ClientCore 的单例概念，每个接口都通过参数传入 IClientCore 对象
 
 /** 客户端实例 */
-export const client = new ClientCore(state);
+export const client = new ClientCore();
diff --git a/packages-user/client-modules/src/render/map/renderer.ts b/packages-user/client-modules/src/render/map/renderer.ts
index d086922..0694b9b 100644
--- a/packages-user/client-modules/src/render/map/renderer.ts
+++ b/packages-user/client-modules/src/render/map/renderer.ts
@@ -78,9 +78,9 @@ export class MapRenderer
     assetWidth: number = 4096;
     assetHeight: number = 4096;
 
-    layerState: IGameMap;
+    map: IGameMap | null = null;
     /** 地图状态钩子控制器 */
-    private layerStateHook: IHookController<IGameMapHooks>;
+    private mapHook: IHookController<IGameMapHooks> | null = null;
 
     /** 排序后的图层 */
     private sortedLayers: IMapLayer[] = [];
@@ -205,13 +205,8 @@ export class MapRenderer
     /**
      * 创建地图渲染器
      * @param manager 素材管理器
-     * @param gl 画布 WebGL2 上下文
-     * @param transform 视角变换矩阵
      */
-    constructor(
-        readonly manager: IMaterialManager,
-        layerState: IGameMap
-    ) {
+    constructor(readonly manager: IMaterialManager) {
         this.movingIndexPool.push(
             ...Array.from({ length: this.movingCount }, (_, i) => i).reverse()
         );
@@ -219,11 +214,6 @@ export class MapRenderer
         this.gl = this.canvas.getContext('webgl2')!;
         this.transform = new Transform();
         this.transform.bind(this);
-        this.layerState = layerState;
-        this.layerStateHook = layerState.addHook(
-            new RendererLayerStateHook(this)
-        );
-        this.layerStateHook.load();
         // 上下文初始化要依赖于 offsetPool，因此提前调用
         const offsetPool = this.getOffsetPool();
         this.offsetPool = offsetPool;
@@ -414,40 +404,42 @@ export class MapRenderer
      * 图层排序
      */
     private sortLayer() {
-        this.sortedLayers = [...this.layerState.layerList].sort((a, b) => {
+        if (!this.map) return;
+        this.sortedLayers = [...this.map.layerList].sort((a, b) => {
             return a.zIndex - b.zIndex;
         });
         this.sortedLayers.forEach((v, i) => this.layerIndexMap.set(v, i));
     }
 
     updateLayerList() {
+        if (!this.map) return;
         this.sortLayer();
         this.resizeLayer();
-        this.layerCount = this.layerState.layerList.size;
+        this.layerCount = this.map.layerList.size;
         this.vertex.updateLayerArray();
     }
 
-    setLayerState(layerState: IGameMap): void {
-        if (layerState === this.layerState) return;
-        this.layerStateHook.unload();
-        this.layerState = layerState;
-        this.layerStateHook = layerState.addHook(
-            new RendererLayerStateHook(this)
-        );
-        this.layerStateHook.load();
+    setLayerState(map: IGameMap): void {
+        if (map === this.map) return;
+        this.mapHook?.unload();
+        this.map = map;
+        this.mapHook = map.addHook(new RendererLayerStateHook(this));
+        this.mapHook.load();
         this.sortLayer();
         this.resizeLayer();
-        this.layerCount = layerState.layerList.size;
+        this.layerCount = map.layerList.size;
         this.vertex.updateLayerArray();
         this.vertex.resizeMap();
     }
 
     getLayer(identifier: string): IMapLayer | null {
-        return this.layerState.getLayerByAlias(identifier) ?? null;
+        if (!this.map) return null;
+        return this.map.getLayerByAlias(identifier) ?? null;
     }
 
     hasLayer(layer: IMapLayer): boolean {
-        return this.layerState.hasLayer(layer);
+        if (!this.map) return false;
+        return this.map.hasLayer(layer);
     }
 
     getSortedLayer(): IMapLayer[] {
diff --git a/packages-user/client-modules/src/render/map/types.ts b/packages-user/client-modules/src/render/map/types.ts
index 3bff2df..4d2486b 100644
--- a/packages-user/client-modules/src/render/map/types.ts
+++ b/packages-user/client-modules/src/render/map/types.ts
@@ -339,7 +339,7 @@ export interface IMapRenderer {
     /** 顶点数组生成器 */
     readonly vertex: IMapVertexGenerator;
     /** 使用的地图状态对象 */
-    readonly layerState: IGameMap;
+    readonly map: IGameMap | null;
 
     /** 地图宽度 */
     readonly mapWidth: number;
diff --git a/packages-user/client-modules/src/types.ts b/packages-user/client-modules/src/types.ts
index 13a3a62..de5ef4a 100644
--- a/packages-user/client-modules/src/types.ts
+++ b/packages-user/client-modules/src/types.ts
@@ -1,18 +1,16 @@
 import { IRenderTreeRoot } from '@motajs/render';
-import { ICoreState } from '@user/data-state';
 import { IMapExtensionManager, IMapRenderer } from './render/map';
 import { IBGMPlayer, IMotaAudioContext, ISoundPlayer } from '@motajs/audio';
 import {
     IAutotileProcessor,
     IMaterialManager,
-    IMotaAssetsLoader
+    IMotaAssetsLoader,
+    IClientBase
 } from '@user/client-base';
 import { IExcitation, IExcitationDivider } from '@motajs/animate';
 
-export interface IClientCore {
-    /** 数据端状态对象 */
-    readonly data: ICoreState;
-
+export interface IClientCore extends IClientBase {
+    /** 渲染端加载对象 */
     readonly loader: IMotaAssetsLoader;
 
     /** 素材管理器 */
@@ -39,15 +37,4 @@ export interface IClientCore {
     readonly soundPlayer: ISoundPlayer<SoundIds>;
     /** BGM 播放器 */
     readonly bgmPlayer: IBGMPlayer<BgmIds>;
-
-    /**
-     * 绑定数据端状态
-     * @param state 数据端状态
-     */
-    bindDataState(state: ICoreState): void;
-
-    /**
-     * 获取当前绑定的数据端状态对象
-     */
-    getDataState(): ICoreState;
 }
diff --git a/packages-user/data-common/src/save/index.ts b/packages-user/data-common/src/save/index.ts
index 213e667..fcb073f 100644
--- a/packages-user/data-common/src/save/index.ts
+++ b/packages-user/data-common/src/save/index.ts
@@ -1,2 +1 @@
-export * from './system';
 export * from './types';
diff --git a/packages-user/data-common/src/save/types.ts b/packages-user/data-common/src/save/types.ts
index 669a750..06b37a6 100644
--- a/packages-user/data-common/src/save/types.ts
+++ b/packages-user/data-common/src/save/types.ts
@@ -1,5 +1,3 @@
-import { Dexie, Table } from 'dexie';
-
 export const enum SaveCompression {
     /** 不进行压缩，仅提取必要数据 */
     NoCompression,
@@ -23,143 +21,3 @@ export interface ISaveableContent<T> {
      */
     loadState(state: T, compression: SaveCompression): void;
 }
-
-export interface IGlobalTrasaction {
-    /** 全局存储对应的表 */
-    readonly table: Table<unknown, string>;
-
-    /**
-     * 获取指定键值对应的数据
-     * @param key 全局键值
-     */
-    get<T>(key: string): Promise<T>;
-
-    /**
-     * 设置指定键值存储的数据
-     * @param key 全局键值
-     * @param value 存储数据
-     */
-    set(key: string, value: unknown): Promise<void>;
-}
-
-export interface ISaveSystemConfig {
-    /** 自动存档使用的压缩等级 */
-    autosaveLevel: SaveCompression;
-    /** 普通存档使用的压缩等级 */
-    commonSaveLevel: SaveCompression;
-    /** 可容忍的最大存档耗时，超过此值会抛出警告 */
-    saveTimeTolerance: number;
-    /** 可容忍的最大自动存档耗时，超过此值会抛出警告 */
-    autosaveTimeTolerance: number;
-    /** 自动存档栈最大大小 */
-    autosaveStackSize: number;
-}
-
-export interface ISaveRead {
-    /** 该存档的压缩等级 */
-    readonly compression: SaveCompression;
-    /** 该存档的数据 */
-    readonly data: Map<string, unknown>;
-}
-
-export interface ISaveSystem {
-    /** Dexie 数据库 */
-    readonly db: Dexie;
-
-    /**
-     * 初始化存档数据库
-     * @param name 数据库名称
-     */
-    init(name: string): void;
-
-    /**
-     * 配置此存档系统
-     * @param config 配置对象
-     */
-    config(config: Readonly<Partial<ISaveSystemConfig>>): void;
-
-    /**
-     * 从 `undo` 栈读取上一个自动存档，然后将当前状态加入 `redo` 栈
-     * @param current 当前游戏状态，需要加入 `redo` 栈
-     */
-    undoAutosave(
-        current: Map<string, ISaveableContent<unknown>>
-    ): ISaveRead | null;
-
-    /**
-     * 从 `redo` 栈读取自动存档，并将当前状态加入 `undo` 栈
-     * @param current 当前游戏状态，需要加入 `undo` 栈
-     */
-    redoAutosave(
-        current: Map<string, ISaveableContent<unknown>>
-    ): ISaveRead | null;
-
-    /**
-     * 获取当前的撤回栈
-     */
-    getUndoStack(): ISaveRead[];
-
-    /**
-     * 获取当前的重做栈
-     */
-    getRedoStack(): ISaveRead[];
-
-    /**
-     * 进行自动存档，加入撤回栈
-     * @param state 状态对象
-     */
-    autosave(state: Map<string, ISaveableContent<unknown>>): void;
-
-    /**
-     * 将 `undo` 栈顶的自动存档真正存入 `IndexedDB`
-     */
-    saveAutosaveToDB(): Promise<void>;
-
-    /**
-     * 将状态对象存入存档
-     * @param id 存档 id，用于建立存档索引及查询
-     * @param state 状态对象
-     */
-    save(
-        id: number,
-        state: Map<string, ISaveableContent<unknown>>
-    ): Promise<void>;
-
-    /**
-     * 根据 id 读取指定存档
-     * @param id 存档 id
-     */
-    load(id: number): Promise<ISaveRead | null>;
-
-    /**
-     * 删除指定存档
-     * @param id 存档 id
-     */
-    deleteSave(id: number): Promise<void>;
-
-    /**
-     * 获取最后一次存档的存档栏位
-     */
-    getLastSlot(): Promise<number>;
-
-    /**
-     * 获取指定键值对应的全局存储
-     * @param key 全局键值
-     */
-    getGlobal<T>(key: string): Promise<T | null>;
-
-    /**
-     * 设置指定键值对应的全局存储
-     * @param key 全局键值
-     * @param value 存储数据
-     */
-    setGlobal(key: string, value: unknown): Promise<void>;
-
-    /**
-     * 进行全局存储的事务处理，适用于多内容查询与设置，当出现错误时其中的任何写入操作都不会真正存储
-     * @param handle 事务处理函数
-     */
-    startGlobalTransaction<R>(
-        handle: (transaction: IGlobalTrasaction) => PromiseLike<R>
-    ): Promise<R>;
-}