CHONGZUO, Aug. 7 (Xinhua) -- The white-headed langur is one of the world's most endangered primate species and exclusive to China. The endangered animals, characterized by the white hair on their heads, are spotted in the 200-square km karst hills between the Zuojiang and Mingjiang rivers in Chongzuo, south China's Guangxi Zhuang Autonomous Region. Since the nature reserve to protect the rare langurs was established in Chongzuo, the population of the animals has witnessed an increase.

A white-headed langur forages at a national nature reserve in Luobai Town of Jiangzhou District, Chongzuo City, south China's Guangxi Zhuang Autonomous Region, Aug. 4, 2023. (Xinhua/Fei Maohua)

A white-headed langur forages at a national nature reserve in Luobai Town of Jiangzhou District, Chongzuo City, south China's Guangxi Zhuang Autonomous Region, Aug. 4, 2023. (Xinhua/Fei Maohua)

A white-headed langur forages at a national nature reserve in Luobai Town of Jiangzhou District, Chongzuo City, south China's Guangxi Zhuang Autonomous Region, Aug. 4, 2023. (Xinhua/Fei Maohua)

A flock of white-headed langurs rest on a cliff at a national nature reserve in Luobai Town of Jiangzhou District, Chongzuo City, south China's Guangxi Zhuang Autonomous Region, Aug. 5, 2023. (Xinhua/Fei Maohua)

A white-headed langur is pictured with its baby on a tree branch at a national nature reserve in Luobai Town of Jiangzhou District, Chongzuo City, south China's Guangxi Zhuang Autonomous Region, Aug. 4, 2023. (Xinhua/Zhang Ailin)

A white-headed langur climbs on a cliff to forage at a national nature reserve in Luobai Town of Jiangzhou District, Chongzuo City, south China's Guangxi Zhuang Autonomous Region, Aug. 5, 2023. (Xinhua/Zhang Ailin)

Two white-headed langurs rest on a cliff at a national nature reserve in Luobai Town of Jiangzhou District, Chongzuo City, south China's Guangxi Zhuang Autonomous Region, Aug. 5, 2023. (Xinhua/Fei Maohua)

A white-headed langur is pictured with its baby on a tree branch at a national nature reserve in Luobai Town of Jiangzhou District, Chongzuo City, south China's Guangxi Zhuang Autonomous Region, Aug. 4, 2023. (Xinhua/Zhang Ailin)

Two white-headed langurs frolic at a national nature reserve in Luobai Town of Jiangzhou District, Chongzuo City, south China's Guangxi Zhuang Autonomous Region, Aug. 5, 2023. (Xinhua/Fei Maohua)

Two white-headed langurs rest on a cliff at a national nature reserve in Luobai Town of Jiangzhou District, Chongzuo City, south China's Guangxi Zhuang Autonomous Region, Aug. 5, 2023. (Xinhua/Zhang Ailin)

A white-headed langur leaps at a national nature reserve in Luobai Town of Jiangzhou District, Chongzuo City, south China's Guangxi Zhuang Autonomous Region, Aug. 5, 2023. (Xinhua/Zhang Ailin)

A white-headed langur eats guava at a national nature reserve in Luobai Town of Jiangzhou District, Chongzuo City, south China's Guangxi Zhuang Autonomous Region, Aug. 4, 2023. (Xinhua/Zhang Ailin)■











