Beijing tightens screws on Hong Kong as contentious new law goes into effect on handover anniversaryChina's Xinhua News Agency later reported that Chinese President Xi Jinping signed the presidential order for the law to be promulgated into Hong Kong's Basic Law, the city's mini-constitution. It is largely believed that the law targeting the protest movement in Hong Kong will become effective overnight in the territory before the Chinese five star flag is raised on the morning of July 1.