Apple ID security hint problem forgot how to set up

1, first enter HTTPS://APPLEID.APPLE.COM/CN this address, and then click the "Manage your Apple ID" button, as shown in the picture

2. Now we use the Apple ID username and password to "log in"

3, after the successful login, we click on "Password and account security" as shown in the following figure.

4, after the click we do not remember the security question, so it can not operate.

5, we will see a "temporary support PIN" button below

6, now I click on it to see what will happen, after clicking

7, will enter the following page and have a four-digit PIN code as shown in the figure, this PIN is a date limit oh.

8, with this pin, we will pick up their mobile phone to play "400-627-2273" phone and then I will be transferred to human services and then you ask them how to operate it, here is not introduced.