In short, you need a valid ID to play an online game for more than 3 hours a day.
http://www.nytimes.com/2007/04/10/w...42810757e39&ei=5053&partner=NYTHEADLINES_INTL
Internet game operators in China must deter young people from playing online more than three hours a day to combat what the government regards as online addiction, according to a circular issued by eight government departments, including the Ministry of Education and the Ministry of Public Security. Game companies must develop a system that cancels half a minor’s earned gaming credits if he remains online for more than three hours a day. If the young person plays for more than five hours a day, all of that player’s credits will be taken away. Online gamers will also be required to register using their real names and identity card numbers, which will indicate if they are under the age of 18. Companies must develop an anti-addiction system by June 15, fully test it by July 15 and implement it thereafter, according to the circular.
http://www.nytimes.com/2007/04/10/w...42810757e39&ei=5053&partner=NYTHEADLINES_INTL