Generally one-on-one is not illegal. But the mob offense. In full view of the public at the same time with more than one person naked chat on the existence of social harm should be combated. Video chat rooms or network groups have a certain amount of public **** sex, any one of the naked chat face many unspecified "audience". In this way, the naked chat has a "performance" nature, also has a "obscene" characteristics, in view of its involvement of people, the harm is wide, can be recognized as "chat room naked chat" or "group nude chat". "Group naked chat" has considerable social harm.
Legal basis:
The Criminal Law of the People's Republic of China (PRC) Article 3001 of the Criminal Law of the People's Republic of China (PRC), if a group of people engages in obscene activities, the primary elements or repeated participants shall be sentenced to fixed-term imprisonment of not more than five years, criminal detention or control.
If a minor is induced to participate in the gathering of obscene activities, he or she shall be punished more severely in accordance with the provisions of the preceding paragraph.