Alexis Tam Chon Weng (2nd L Front), secretary for social affairs and culture of the Macao Special Administrative Region (SAR) government, attends the national flag-raising ceremony in Macao, south China, May 4, 2015. More than 1,000 people including representatives of 43 schools and 19 youth communities and Macao SAR officials on Monday took part in the national flag-raising ceremony to celebrate the Chinese Youth Day marking the May 4th Movement that happened on May 4, 1919, ushering in the new-democratic revolution in China. (Xinhua/Cheong Kam Ka)