You can download the PHP Chinese website application from the app store on the ipadair3 tablet. After downloading, the password input box on the login page is focused, and the number input pad that comes with the application pops up. Although there are letters under the 9-square numbers, long pressing on the iPad cannot A pinyin letter selection pops up. Later, I used the email login method, and the password input box inside popped up the system's own input keyboard.