When registering as a Shopee seller, you need to fill in a user name. This username needs to meet the following requirements:

Length: more than 5 characters and less than 40 characters.

Content: You can use English, numbers, underscores and periods, but you cannot use spaces, Chinese or other special symbols.

Relevance: The user name should be related to the main products or services of your store, so that consumers can know what you sell at a glance.

For example, if you sell clothing, the user name can be "XX Clothing Store" or "XX Fashion"; if you sell food, the user name can be "XX Food House" or "XX Taste".

Please note that the username is a unique way to identify the seller, so you need to choose a unique and relevant username for effective communication and transactions on the platform.