Hong Kong's new police commissioner Chris Tang is visiting Beijing. He attended the national flag raising ceremony at Tian'anmen Square on Saturday morning. On Friday, he met with China's Minister of Public Security, Zhao Kezhi. This is Tang's first visit to the capital since he took office last month. Zhao pledged his support to the Hong Kong police, telling Tang that ending the violence and restoring order are top priorities. The commissioner said he's determined to defend the "One Country, Two Systems" principle as well as Hong Kong's stability.