German police asked masked Hong Kong demonstrators to remove masks

There are international students and overseas Chinese who spontaneously held a "patriotic escort" rally in Cologne. At the scene, there were masked Hong Kong demonstrators. The German police asked masked people to remove the mask. Under the repeated request of the police, the "Mongolian The noodle had to take off his mask and reveal his true face until the police took off the mask and the police allowed him to leave.