diff --git a/src/plugin/utils.ts b/src/plugin/utils.ts
index 6083d79..ea5d7fe 100644
--- a/src/plugin/utils.ts
+++ b/src/plugin/utils.ts
@@ -197,9 +197,18 @@ export function download(content: string, name: string) {
  * @param funcs 函数列表
  * @param interval 调用间隔
  */
-export async function doByInterval(funcs: (() => void)[], interval: number) {
+export async function doByInterval(
+    funcs: (() => void)[],
+    interval: number,
+    awaitFirst: boolean = false
+) {
     for await (const fn of funcs) {
-        await sleep(interval);
+        if (awaitFirst) {
+            await sleep(interval);
+        }
         fn();
+        if (!awaitFirst) {
+            await sleep(interval);
+        }
     }
 }
diff --git a/src/ui/start.vue b/src/ui/start.vue
index ed4a11a..f46fbe3 100644
--- a/src/ui/start.vue
+++ b/src/ui/start.vue
@@ -50,7 +50,7 @@ import { nextTick, onMounted, onUnmounted, reactive, ref } from 'vue';
 import { RightOutlined, SoundOutlined } from '@ant-design/icons-vue';
 import { sleep } from 'mutate-animate';
 import { Matrix4 } from '../plugin/webgl/matrix';
-import { keycode } from '../plugin/utils';
+import { doByInterval, keycode } from '../plugin/utils';
 import { KeyCode } from '../plugin/keyCodes';
 
 let startdiv: HTMLDivElement;
@@ -184,20 +184,18 @@ async function showHard() {
         'left 0.4s ease-out, top 0.4s ease-out, opacity 0.4s linear';
     cursor.style.opacity = '0';
     buttons.forEach(v => (v.style.transition = ''));
-    ids.unshift(toshow.pop()!);
-    await sleep(150);
-    ids.unshift(toshow.pop()!);
-    await sleep(150);
-    ids.unshift(toshow.pop()!);
-    await sleep(150);
-    ids.unshift(toshow.pop()!);
-    await sleep(400);
+
+    await doByInterval(
+        Array(4).fill(() => ids.unshift(toshow.pop()!)),
+        150
+    );
+    await sleep(250);
     text.value = hard;
-    toshow.push(hardIds.shift()!);
-    await sleep(150);
-    toshow.push(hardIds.shift()!);
-    await sleep(150);
-    toshow.push(hardIds.shift()!);
+
+    await doByInterval(
+        Array(3).fill(() => toshow.push(hardIds.shift()!)),
+        150
+    );
     selected.value = 'easy';
     nextTick(() => {
         buttons = toshow
@@ -219,24 +217,22 @@ async function setButtonAnimate() {
             'left 0.4s ease-out, top 0.4s ease-out, opacity 0.4s linear';
         cursor.style.opacity = '0';
         buttons.forEach(v => (v.style.transition = ''));
-        hardIds.unshift(toshow.pop()!);
-        await sleep(150);
-        hardIds.unshift(toshow.pop()!);
-        await sleep(150);
-        hardIds.unshift(toshow.pop()!);
+        await doByInterval(
+            Array(3).fill(() => hardIds.unshift(toshow.pop()!)),
+            150
+        );
     }
     text.value = text1;
     if (played) {
         text.value = text2;
     }
-    await sleep(400);
-    toshow.push(ids.shift()!);
-    await sleep(150);
-    toshow.push(ids.shift()!);
-    await sleep(150);
-    toshow.push(ids.shift()!);
-    await sleep(150);
-    toshow.push(ids.shift()!);
+    await sleep(250);
+
+    await doByInterval(
+        Array(4).fill(() => toshow.push(ids.shift()!)),
+        150
+    );
+
     selected.value = 'start-game';
     nextTick(() => {
         buttons = toshow