Aerial photo shows people enjoying the spring view in Changjiang Village of Changning City, central China's Hunan Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Photo by Zhou Xiuyuchun/Xinhua)

People enjoy the spring view in Dongshanyin Village of Zaozhuang City, east China's Shandong Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Photo by Sun Zhongzhe/Xinhua)

A child plays on a lawn in Longshanhu Village of Zhenjiang, east China's Jiangsu Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Photo by Zhong Xueman/Xinhua)

People enjoy the spring view at a park in Haikou, south China's Hainan Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Xinhua/Yang Guanyu)

Children enjoy the spring view at a park in Tengzhou, east China's Shandong Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Photo by Li Zhijun/Xinhua)

People enjoy the spring view in Haikou, south China's Hainan Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Xinhua/Yang Guanyu)

Aerial photo shows the spring view of a wetland park in Yangzhou, east China's Jiangsu Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Photo by Meng Delong/Xinhua)

Children play at a park in Beibei District of southwest China's Chongqing, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Photo by Qin Tingfu/Xinhua)

A visitor enjoys the spring view in Changjiang Village of Changning City, central China's Hunan Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Photo by Zhou Xiuyuchun/Xinhua)

People enjoy the spring view at a park in Hefei, east China's Anhui Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Photo by Chen Sanhu/Xinhua)

People ride at a park in Haikou, south China's Hainan Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Xinhua/Yang Guanyu)

People enjoy the spring view at a park in Nanjing, east China's Jiangsu Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Photo by Su Yang/Xinhua)

Children enjoy the spring view in Matou Town of Linyi, east China's Shandong Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Photo by Fang Dehua/Xinhua)

Tourists enjoy the spring view of a wetland park in Yangzhou, east China's Jiangsu Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Photo by Meng Delong/Xinhua)

People enjoy the spring view at a park in Haikou, south China's Hainan Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Xinhua/Yang Guanyu)

Aerial photo shows the spring view of Wulingyuan scenic area in Zhangjiajie, central China's Hunan Province, April 5, 2022. Qingming Festival, a traditional Chinese holiday for people to pay tribute to the dead and worship ancestors, falls on Tuesday this year. The Chinese term "Taqing" refers to a spring outing when people get out and enjoy the spring blossoms. It is one of the most important and long-lasting customs of Qingming. (Photo by Wu Yongbing/Xinhua)