What is the sign that Kunming prohibits minors from entering Internet cafes?

Minors in Kunming are forbidden to enter Internet cafes. The notice board prohibits minors under 0/8 from entering the Internet cafe.

According to the law, operators of places that are not suitable for minors' activities, such as commercial song and dance entertainment places, bars and Internet service places, are not allowed to enter.

At present, there is no unified sign prohibiting minors from entering the reminder board in China. We can design the pattern effect by ourselves, but the design effect must be highly recognizable to meet the specifications.