Shanghai has become the first mainland city to enforce a ban on its registered citizens from holding permanent residency in other countries – for example the US green card. The new rule was announced on the municipal public security authority’s website earlier this month and said Chinese citizens “settling down abroad or obtaining other nationalities” should report to the police to revoke their permanent residency, which is known as hukou.

Following a heated in-classroom debate a male postgraduate student at the Shanghai University of Sport caught up with one of his female classmates outside and tried to get her to come around to his point of view after she made him look silly in front of the class. Rather than waste time with verbal arguments and logic, he opened with a strong smack to the back of the head.