Tianya Forum's ID activation needs to meet some conditions. For details, you can refer to Tianya Forum's activation rules: 1. The registration time must be within the time period when Tianya Forum is open for registration; 2. When registering, you must fill in the valid account information of Tianya Forum, including username, password, email address, mobile phone number, etc.; 3. The activation ID must be a registered Tianya Forum account and have already obtained an activation code. The activation code was issued by Tianya Forum's administrator and could be applied through the email address filled in during registration. After applying for the activation code, one needed to verify it according to the activation rules of Tianya Forum. After the verification was successful, the ID could be used normally. When posting or replying to a post, if the ID was not activated, the system would prompt "ID not activated". If you want to post and reply, you can follow the account registration and usage rules of Tianya Forum. If you have any questions about the use of Tianya Forum, you can check the help document of Tianya Forum.