Hello, email means email. You can fill in my usual email address, such as QQ email address: 123456789@qq.com.

(You can consult the credit card service information of China Merchants Bank online through QQ or WeChat. Method 1: Search 4008205555 among QQ corporate friends, and add China Merchants Bank Credit Card Center as a friend; Method 2: Search for "cmb4008205555" on WeChat, and pay attention to China Merchants Bank Credit Card Center)