A sightseeing boat sails on a lake at the Xiaonanhai scenic spot during the three-day Labor Day holiday in Chongqing, southwest China, April 29, 2017. (Xinhua/Yang Min)
Tourists visit Fenghuang old town during the three-day Labor Day holiday in Xiangxi Prefecture, central China's Hunan Province, April 29, 2017. Fenghuang, which means "phoenix" in Chinese, is known for its well-preserved architecture and traditional river town scenery. (Xinhua/Peng Biao)
Tourists visit Fenghuang old town during the three-day Labor Day holiday in Xiangxi Prefecture, central China's Hunan Province, April 29, 2017. Fenghuang, which means "phoenix" in Chinese, is known for its well-preserved architecture and traditional river town scenery. (Xinhua/Peng Biao)
People take a rest as they travel on the West Lake in Hangzhou, capital of east China's Zhejiang Province, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1. (Xinhua/Zhang Cheng)
Eleven-year-old Zhou Zimu wears a VR glass and plays a game at the Science and Technology Museum in Chongqing, southwest China, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1. (Xinhua/Wang Quanchao)
People watch aerobatics at the AirShow 2017 in Zhengzhou, capital of central China's Henan Province, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1. (Xinhua/Zhu Xiang)
People watch aerobatics at the AirShow 2017 in Zhengzhou, capital of central China's Henan Province, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1. (Xinhua/Zhu Xiang)
People visit the Science and Technology Museum in Chongqing, southwest China, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1. (Xinhua/Wang Quanchao)
People watch performance of sea lions on the Boundary Island in Lingshui County, south China's Hainan Province, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1.(Xinhua/Zhao Yingquan)
Children take part in a competition of packing luggage at Youth Development Center in Hangzhou, capital of east China's Zhejiang Province, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1.(Xinhua/Huang Zongzhi)
Tourists enjoy flowers at the Botanical Garden in Beijing, capital of China, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1.(Xinhua/Zhang Xu)
People visit World Horticultural Expo Garden in Kunming, capital of southwest China's Yunnan Province, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1.(Xinhua/Lin Yiguang)
People visit a corridor decorated with pinwheels at World Horticultural Expo Garden in Kunming, capital of southwest China's Yunnan Province, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1.(Xinhua/Lin Yiguang)
Children feed a dolphin on the Boundary Island in Lingshui County, south China's Hainan Province, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1.(Xinhua/Zhao Yingquan)
Tourists visit Kang Bai-wan's Mansions, an ancient family house, in Gongyi City, central China's Henan Province, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1.(Xinhua/Li Bo)
Children comb hair and do massage for their parents as they take part in an event to pay respects to labourers at Youth Development Center in Hangzhou, capital of east China's Zhejiang Province, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1.(Xinhua/Huang Zongzhi)
Tourists pose for photos in front of the National Center for the Performing Arts in Beijing, capital of China, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1. (Xinhua/Li Xin)
People have a trip on the Changqiao Park on the West Lake in Hangzhou, capital of east China's Zhejiang Province, April 30, 2017. Chinese people are enjoying their three-day holiday which falls on April 29 to May 1. (Xinhua/Zhang Cheng)
