If your Mac system has been upgraded to macOS Mojave，You may encounter such a situation：Although the "system language" is Chinese，But the user login interface is in English。So，How to change the Mac login interface to Chinese? Two methods are introduced below。 Method one：通过系统偏好设置更改语言 1.打开系统偏好设置，Select "Language & Region"。 2.Drag English to the top of the preferred languages ​​list，Then drag Simplified Chinese to the top。 3.Just restart your computer。 If there is no English option in the list，Please follow the steps below： 1.Click the "+" sign in the lower left corner，Select English and click Add。 2.Click "Use English"，然后将简体中文拖到...