20 10 On September 2nd, Tianjin Japanese School in Jinnan District of Tianjin was attacked and destroyed. When someone drove by the school, he threw a small iron ball from the car into the security room, and the glass window of the security room was smashed, but two security guards in the room were not injured. The next morning, graffiti was found on the outer wall of the school, which read "The territory of China is inviolable". Tianjin public security has been involved in the investigation.