Black-capped gibbons seen in Bawangling state nature reserve located in south China's Hainan Province. As one of the four types of primates in the world, the black-capped gibbons, found only in Hainan, receive top state protection in China. According to the statistics of 1998, there are about 20 black-capped gibbons living in the rain forest here. To intensify protection of the endangered primate, the State Council of China approved to enlarge the covering area of the Bawangling state nature reserve from 66.3 square kilometers to 299.8 square kilometers in Aug. 2003. (Xinhua photo)