diff --git a/packages-user/client-modules/src/render/elements/misc.ts b/packages-user/client-modules/src/render/elements/misc.ts
index 2bf78cf..a713e33 100644
--- a/packages-user/client-modules/src/render/elements/misc.ts
+++ b/packages-user/client-modules/src/render/elements/misc.ts
@@ -159,6 +159,7 @@ export class Winskin extends RenderItem<EWinskinEvent> {
     private patternCache?: WinskinPatterns;
     private patternTransform: DOMMatrix;
 
+    // todo: 跨上下文可能是未定义行为，需要上下文无关化
     private static patternMap: Map<string, WinskinPatterns> = new Map();
 
     constructor(
diff --git a/packages-user/client-modules/src/render/weather/controller.ts b/packages-user/client-modules/src/render/weather/controller.ts
index f7c04e6..99f5858 100644
--- a/packages-user/client-modules/src/render/weather/controller.ts
+++ b/packages-user/client-modules/src/render/weather/controller.ts
@@ -83,7 +83,7 @@ export class WeatherController implements IWeatherController {
         const instance = new WeatherInstance(obj, element);
         instance.setZIndex(this.zIndex + this.active.size);
         this.active.add(instance);
-        this.container?.appendChild(element);
+        this.container.appendChild(element);
         return instance;
     }
 
diff --git a/packages/animate/package.json b/packages/animate/package.json
new file mode 100644
index 0000000..2029a01
--- /dev/null
+++ b/packages/animate/package.json
@@ -0,0 +1,3 @@
+{
+    "name": "@motajs/animate"
+}
diff --git a/packages/animate/src/index.ts b/packages/animate/src/index.ts
new file mode 100644
index 0000000..fcb073f
--- /dev/null
+++ b/packages/animate/src/index.ts
@@ -0,0 +1 @@
+export * from './types';
diff --git a/packages/animate/src/types.ts b/packages/animate/src/types.ts
new file mode 100644
index 0000000..792ff6f
--- /dev/null
+++ b/packages/animate/src/types.ts
@@ -0,0 +1,55 @@
+export interface IExcitable<T> {
+    /**
+     * 受到激励源激励
+     * @param payload 由激励源传递而来的负载
+     */
+    excited(payload: T): void;
+}
+
+export interface IExcitableController<T> {
+    /** 受激励对象 */
+    readonly excitable: T;
+
+    /**
+     * 释放此受激励对象，不再受到当前激励源激励，可以换用其他激励源
+     */
+    revoke(): void;
+
+    /**
+     * 手动激励此受激励对象一次
+     * @param payload 激励负载
+     */
+    excite(payload: T): void;
+}
+
+export interface IExcitation<T> {
+    /**
+     * 获取当前的激励负载
+     */
+    payload(): T;
+
+    /**
+     * 激励所有由此激励源激励的内容
+     * @param payload 传递给激励内容的负载
+     */
+    excite(payload: T): void;
+
+    /**
+     * 添加受激励对象
+     * @param object 受激励对象
+     * @returns 受激励对象控制器
+     */
+    add(object: IExcitable<T>): IExcitableController<T>;
+
+    /**
+     * 移除一个受激励对象
+     * @param object 受激励对象
+     * @returns 是否成功移除，内容不存在或是其他特殊情况会返回 `false`
+     */
+    remove(object: IExcitable<T>): boolean;
+
+    /**
+     * 摧毁这个激励源
+     */
+    destroy(): void;
+}