Article in English: It's a grey app with gears which you'll likely find on the Home Screen. It has a picture of a gear to its left. If Restrictions are already enabled on your iPhone or iPad, you'll be prompted to enter a passcode. If you haven't enabled Restrictions, tap Enable Restrictions and create a passcode, then skip the next step. This passcode may be different than the passcode with which you lock your iPhone or iPad. It's in the "ALLOWED CONTENT" group of options just below the groups of switches on this page. This option is near the top of the page. When you tap it, you should see a blue checkmark appear to the right of it. It's in the top-left corner of the screen. Doing so will save your settings and prevent the phone's owner from viewing adult sites on the Safari browser. Consider also sliding the Installing Apps switch left to the "Off" position. This option will prevent other users from downloading different browsers in which to view adult sites.

Summary in Chinese:
打开iPhone'或iPad设备的“设置”应用程序。 滚动菜单，点击通用。 滚动菜单，点击访问限制。 输入访问限制密码。 滚动菜单，点击网站。 点击限制成人内容。 点击“返回”按钮。