Come, love, send a star, leave? ————The mobile phone of Senior Senior Wang When there is no supervisor, Senior Senior Wang has two states of playing with his mobile phone and not playing with his mobile phone at the same time. The probability of each state varies from person to person.

And when the supervisor (such as parents, teachers) supervises, no matter what specific state the collapse is, the state of not playing with the mobile phone will remain for a long time