How to write the customs user name?

Pocket customs user name format is as follows:

1. User name is 6-20 characters long, starts with a letter, and can only be composed of letters, numbers and underscores.

2. User name must start with a letter and cannot contain spaces and special characters.

3. If you register with your ID number, the user name is "ZSHG" plus the last 6 digits of the ID number. For example, if your ID number is123456789012345678, then the user name registered at Pocket Customs should be "ZSHG5678".

Note: The user name and password of the Pocket Customs APP are unique. It is recommended that you set a complicated password and keep it safe.