Type of the domain name:cn/.com.cn/.net.cn/.org.cn/.gov.cn/.bj.cn
Registration Rules:
1,only English letters (az,not case sensitive),numbers (0-9),and "-" (in conjunction English,that is,in line),can not use spaces and special characters (such as!,$,&,?, Etc.).
2,"-" can not be used at the beginning and end of
3, not the length of more than 63 characters