diff --git a/demo/pages/docs/customize-theme/enUS/index.md b/demo/pages/docs/customize-theme/enUS/index.md
index a2e66b816ce..af0eabc5d3c 100644
--- a/demo/pages/docs/customize-theme/enUS/index.md
+++ b/demo/pages/docs/customize-theme/enUS/index.md
@@ -35,6 +35,10 @@ If `theme` is `undefined` it won't affect the theme of components inside.
 </script>
 ```
 
+## Get theme vars
+
+Whether it's the default light theme (`lightTheme`), the modified dark theme (`darkTheme`), or the custom theme we adjusted, you can get theme variables within the scope of the theme using [useThemeVars](./theme#use-theme-vars).
+
 ## Customizing theme vars (design tokens)
 
 No CSS (Scss, Less) needed.
diff --git a/demo/pages/docs/customize-theme/zhCN/index.md b/demo/pages/docs/customize-theme/zhCN/index.md
index 3f6eeb0f066..91fb0839cad 100644
--- a/demo/pages/docs/customize-theme/zhCN/index.md
+++ b/demo/pages/docs/customize-theme/zhCN/index.md
@@ -35,6 +35,10 @@ Naive UI 通过使用 `n-config-provider` 调整主题。
 </script>
 ```
 
+## 获取主题变量
+
+无论是默认的亮色主题(`lightTheme`)，还是修改后的暗色主题(`darkTheme`)，亦或我们通过调整得到的自定义主题，在该主题生效范围内的组件中都可以通过 [useThemeVars](./theme#use-theme-vars) 来获取主题变量。
+
 ## 调整主题变量
 
 你不需要写任何 CSS（Scss、Less...）。
diff --git a/src/checkbox/demos/enUS/index.demo-entry.md b/src/checkbox/demos/enUS/index.demo-entry.md
index be46e63d540..6169f927df8 100644
--- a/src/checkbox/demos/enUS/index.demo-entry.md
+++ b/src/checkbox/demos/enUS/index.demo-entry.md
@@ -23,12 +23,14 @@ focus.vue
 | Name | Type | Default | Description |
 | --- | --- | --- | --- |
 | checked | `boolean` | `false` | Whether the checkbox is being checked manually. |
+| checked-value | `string \| boolean \| number` | `true` | Value of checked state. |
 | default-checked | `boolean` | `false` | Whether the checkbox is checked by default. |
 | disabled | `boolean` | `false` | Whether the checkbox is disabled. |
 | focusable | `boolean` | `true` | Whether the checkbox gains focus after being checked. |
 | indeterminate | `boolean` | `false` | Whether the checkbox can have a third indeterminate state. |
 | label | `string` | `undefined` | Checkbox label. |
 | size | `'small' \| 'medium' \| 'large'` | `'medium'` | The size of the checkbox. |
+| unchecked-value | `string \| boolean \| number` | `false` | Value of unchecked state. |
 | value | `string \| number` | `undefined` | The value of the checkbox to be used in a checkbox group. |
 | on-update:checked | `(checked: boolean) => void` | `undefined` | Callback function triggered on a checked status change. |
 
diff --git a/src/checkbox/demos/zhCN/index.demo-entry.md b/src/checkbox/demos/zhCN/index.demo-entry.md
index 9d96d5ca105..499de79c057 100644
--- a/src/checkbox/demos/zhCN/index.demo-entry.md
+++ b/src/checkbox/demos/zhCN/index.demo-entry.md
@@ -24,12 +24,14 @@ rtl-debug.vue
 | 名称 | 类型 | 默认值 | 说明 |
 | --- | --- | --- | --- |
 | checked | `boolean` | `false` | 受控状态下是否选中 |
+| checked-value | `string \| boolean \| number` | `true` | 选中时对应的值 |
 | default-checked | `boolean` | `false` | 非受控模式下默认是否选中 |
 | disabled | `boolean` | `false` | 是否禁用 |
 | focusable | `boolean` | `true` | 是否可被 focus |
 | indeterminate | `boolean` | `false` | 是否部分选中 |
 | label | `string` | `undefined` | Checkbox 的标签 |
 | size | `'small' \| 'medium' \| 'large'` | `'medium'` | 组件尺寸 |
+| unchecked-value | `string \| boolean \| number` | `false` | 未选中时对应的值 |
 | value | `string \| number` | `undefined` | Checkbox 在 checkbox group 中使用的值 |
 | on-update:checked | `(checked: boolean) => void` | `undefined` | 当 checked 改变时触发的回调函数 |
 
diff --git a/src/popover/demos/enUS/index.demo-entry.md b/src/popover/demos/enUS/index.demo-entry.md
index 32462440a25..07ead3e5940 100644
--- a/src/popover/demos/enUS/index.demo-entry.md
+++ b/src/popover/demos/enUS/index.demo-entry.md
@@ -50,7 +50,6 @@ slots.vue
 | scrollable | `boolean` | `false` | Whether the popover's content is scrollable. | 2.28.3 |
 | show-arrow | `boolean` | `true` | Whether to show arrow if set. |  |
 | show | `boolean` | `undefined` | Whether to show popover. |  |
-| title | `string` | `undefined` | Popover title. |  |
 | to | `string \| HTMLElement \| false` | `'body'` | Container node of the popover content. `false` will keep it at trigger container. |  |
 | trigger | `'hover' \| 'click' \| 'focus' \| 'manual'` | `'hover'` | The popover trigger type. |  |
 | width | `number \| 'trigger'` | `undefined` | `'trigger'` means popover's width will follow its trigger's width. |  |
diff --git a/src/popover/demos/zhCN/index.demo-entry.md b/src/popover/demos/zhCN/index.demo-entry.md
index 72e7696aeb6..fbe31339b00 100644
--- a/src/popover/demos/zhCN/index.demo-entry.md
+++ b/src/popover/demos/zhCN/index.demo-entry.md
@@ -57,7 +57,6 @@ center-arrow-debug.vue
 | scrollable | `boolean` | `false` | popover 内容是否可滚动 | 2.28.3 |
 | show-arrow | `boolean` | `true` | 是否显示箭头 |  |
 | show | `boolean` | `undefined` | 是否展示 popover |  |
-| title | `string` | `undefined` | popover 的 title 信息 |  |
 | to | `string \| HTMLElement \| false` | `'body'` | 弹出内容的目标容器位置，`false` 会待在原地 |  |
 | trigger | `'hover' \| 'click' \| 'focus' \| 'manual'` | `'hover'` | popover 的触发方式 |  |
 | width | `number \| 'trigger'` | `undefined` | `'trigger'` 表示 popover 的宽度会和它的触发元素一致 |  |
diff --git a/src/switch/demos/enUS/index.demo-entry.md b/src/switch/demos/enUS/index.demo-entry.md
index 76b1652247c..fdc8eb4bbbe 100644
--- a/src/switch/demos/enUS/index.demo-entry.md
+++ b/src/switch/demos/enUS/index.demo-entry.md
@@ -30,7 +30,7 @@ icon.vue
 | round | `boolean` | `true` | Whether the switch has rounded corners. |  |
 | rubber-band | `boolean` | `true` | Whether the switch button has rubber band effect. | 2.28.3 |
 | size | `'small' \| 'medium' \| 'large'` | `'medium'` | The size of the switch. |  |
-| unchecked-value | `string \| boolean \| number` | `false` | Value of checked state. |  |
+| unchecked-value | `string \| boolean \| number` | `false` | Value of unchecked state. |  |
 | value | `string \| number \| boolean \| undefined` | `undefined` | Value when being set manually. |  |
 | on-update:value | `(value: boolean) => void` | `undefined` | Callback when the component's value changes. |  |
 
diff --git a/src/upload/demos/enUS/index.demo-entry.md b/src/upload/demos/enUS/index.demo-entry.md
index 4a6b4a9d574..8d63ed1c644 100644
--- a/src/upload/demos/enUS/index.demo-entry.md
+++ b/src/upload/demos/enUS/index.demo-entry.md
@@ -61,11 +61,11 @@ download.vue
 | trigger-class | `string` | `undefined` | Class of trigger area. | 2.36.0 |
 | trigger-style | `Object \| string` | `undefined` | Style of trigger area. | 2.29.1 |
 | with-credentials | `boolean` | `false` | Any credentials to be sent with the request (e.g. cookie). |  |
-| on-change | `(options: { file: UploadFileInfo, fileList: Array<UploadFileInfo>, event?: Event }) => void` | `() => {}` | Uploaded file(s) status change callback. |  |
+| on-change | `(options: { file: UploadFileInfo, fileList: Array<UploadFileInfo>, event?: Event }) => void` | `undefined` | Uploaded file(s) status change callback. |  |
 | on-error | `(options: { file: UploadFileInfo, event?: ProgressEvent }) => UploadFileInfo \| void` | `undefined` | Upload failed callback. | 2.24.0 |
 | on-finish | `(options: { file: UploadFileInfo, event?: Event }) => UploadFileInfo \| undefined` | `({ file }) => file` | Upload finished callback. You can intercept and even modify the uploaded `UploadFileInfo`. Note: file will be null in next event-loop |  |
 | on-before-upload | `(options: { file: UploadFileInfo, fileList: Array<UploadFileInfo> }) => (Promise<boolean \| void> \| boolean \| void)` | `true` | Upload ready to start callback. Returning `false`, a promise resolved with `false`, or a rejected promise will cancel the upload. |  |
-| on-download | `(file: FileInfo) => void` | `undefined` | Callback for clicking download buttons. Returning `false`, `Promise resolve false`, `Promise rejected` will cancel the download. |  |
+| on-download | `(file: FileInfo) => Promise<boolean> \| boolean \| any` | `undefined` | Callback for clicking download buttons. Returning `false`, `Promise resolve false`, `Promise rejected` will cancel the download. |  |
 | on-preview | `(file: FileInfo, detail: { event: MouseEvent }) => void` | `undefined` | Callback for clicking file links or preview buttons. You can use `preventDefault` to prevent default anchor link open behavior. | `detail.event` 2.39.0 |
 | on-remove | `(options: { file: UploadFileInfo, fileList: Array<UploadFileInfo>, index: number }) => Promise<boolean> \| boolean \| any` | `() => true` | File removed callback. Returning `false`, a promise resolved with `false`, or a rejected promise will cancel this removal. | `index` 2.38.2 |
 | on-retry | `(options: { file: UploadFileInfo }) => (Promise<boolean \| void> \| boolean \| void)` | `undefined` | Click retry callback function. Returning `false`, a promise resolved with `false`, or a rejected promise will cancel the retry. | NEXT_VERSION |
diff --git a/src/upload/demos/zhCN/index.demo-entry.md b/src/upload/demos/zhCN/index.demo-entry.md
index 0fa7cb254cd..48d6dc7f4d9 100644
--- a/src/upload/demos/zhCN/index.demo-entry.md
+++ b/src/upload/demos/zhCN/index.demo-entry.md
@@ -62,11 +62,11 @@ debug.vue
 | trigger-class | `string` | `undefined` | 触发器区域的类名 | 2.36.0 |
 | trigger-style | `Object \| string` | `undefined` | 触发器区域的样式 | 2.29.1 |
 | with-credentials | `boolean` | `false` | 是否携带 Cookie |  |
-| on-change | `(options: { file: UploadFileInfo, fileList: Array<UploadFileInfo>, event?: Event }) => void` | `() => {}` | 组件状态变化的回调，组件的任何文件状态变化都会触发回调 |  |
+| on-change | `(options: { file: UploadFileInfo, fileList: Array<UploadFileInfo>, event?: Event }) => void` | `undefined` | 组件状态变化的回调，组件的任何文件状态变化都会触发回调 |  |
 | on-error | `(options: { file: UploadFileInfo, event?: ProgressEvent }) => UploadFileInfo \| void` | `undefined` | 文件上传失败的回调 | 2.24.0 |
 | on-finish | `(options: { file: UploadFileInfo, event?: ProgressEvent }) => UploadFileInfo \| undefined` | `({ file }) => file` | 文件上传结束的回调，可以修改传入的 UploadFileInfo 或者返回一个新的 UploadFileInfo。注意：file 将会下一次事件循环中被置为 null |  |
 | on-before-upload | `(options: { file: UploadFileInfo, fileList: UploadFileInfo[] }) => (Promise<boolean \| void> \| boolean \| void)` | `undefined` | 文件上传之前的回调，返回 `false`、`Promise resolve false`、`Promise rejected` 时会取消本次上传 |  |
-| on-download | `(file: FileInfo) => void` | `undefined` | 点击文件下载按钮的回调函数，返回 `false`、`Promise resolve false`、`Promise rejected` 时会取消本次下载 |  |
+| on-download | `(file: FileInfo) => Promise<boolean> \| boolean \| any` | `undefined` | 点击文件下载按钮的回调函数，返回 `false`、`Promise resolve false`、`Promise rejected` 时会取消本次下载 |  |
 | on-preview | `(file: FileInfo, detail: { event: MouseEvent }) => void` | `undefined` | 点击文件链接或预览按钮的回调函数，你可以通过 `preventDefault` 来取消默认的链接打开行为 | `detail.event` 2.39.0 |
 | on-remove | `(options: { file: UploadFileInfo, fileList: Array<UploadFileInfo>, index: number }) => Promise<boolean> \| boolean \| any` | `() => true` | 文件删除回调，返回 `false`、`Promise resolve false`、`Promise rejected` 时会取消本次删除 | `index` 2.38.2 |
 | on-retry | `(options: { file: UploadFileInfo }) => (Promise<boolean \| void> \| boolean \| void)` | `undefined` | 点击重试的回调函数，返回 `false`、`Promise resolve false`、`Promise rejected` 时会取消本次重试 | NEXT_VERSION |