add zh-cn/application-dev/faqs/faqs-event-notification.md.

Signed-off-by: Nzengyawen <zengyawen1@huawei.com>

zh-cn/application-dev/faqs/faqs-event-notification.md

+# 公共事件与通知开发常见问题
+
+## emitter数据大小限制
+
+适用于：OpenHarmony SDK 3.2.5.3版本，API9 Stage模型
+
+emitter数据大小限制不超过10240。
+
+## 如何实现点击Notification通知打开对应App 
+
+适用于：OpenHarmony SDK 3.2.5.5版本，API9 Stage模型
+
+通过配置Notification.publish发布通知接口的参数NotificationRequest中wantAgent属性实现
+
+参考文档：[Notification](../reference/apis/js-apis-notification.md#notificationpublish)、[WantAgent](../reference/apis/js-apis-wantAgent.md)
+
+示例：
+
+```
+import WantAgent from '@ohos.wantAgent';
+
+async function publishNotification() {
+  let wantAgentInfo = {
+    wants: [
+      {
+        bundleName: "com.example.notification",
+        abilityName: "MainAbility",
+      }
+    ],
+    operationType: WantAgent.OperationType.START_ABILITIES,
+    requestCode: 0,
+  }
+  const wantAgent = await WantAgent.getWantAgent(wantAgentInfo)
+  let contentType = Notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT;
+  await Notification.publish({
+    content: {
+      contentType: contentType,
+      normal: {
+        title: "测试标题",
+        text: "测试内容",
+      }
+    },
+    id: 1,
+    wantAgent: wantAgent
+  })
+  prompt.showToast({ message: "发送成功" })
+}
+```