A ceremony paying homage to Huangdi, or the Yellow Emperor, who is regarded a common ancestor of all Chinese people, is held in Huangling county, Northwest China's Shaanxi province, April 5, 2019, during Qingming Festival. (Photo: Zhao Hao)

Performers pay homage to Huangdi, or the Yellow Emperor, who is regarded a common ancestor of all Chinese people, in Huangling county, Northwest China's Shaanxi province, April 5, 2019, during Qingming Festival. (Photo: Zhao Hao)

Performers dance during a ceremony paying homage to Huangdi, or the Yellow Emperor, who is regarded a common ancestor of all Chinese people, in Huangling county, Northwest China's Shaanxi province, April 5, 2019, during Qingming Festival. (Photo: Zhao Hao)

Performers pay homage to Huangdi, or the Yellow Emperor, who is regarded a common ancestor of all Chinese people, in Huangling county, Northwest China's Shaanxi province, April 5, 2019, during Qingming Festival. (Photo: Zhao Hao)

A ceremony paying homage to Huangdi, or the Yellow Emperor, who is regarded a common ancestor of all Chinese people, is held in Huangling county, Northwest China's Shaanxi province, April 5, 2019, during Qingming Festival. (Photo: Zhao Hao)

A ceremony paying homage to Huangdi, or the Yellow Emperor, who is regarded a common ancestor of all Chinese people, is held in Huangling county, Northwest China's Shaanxi province, April 5, 2019, during Qingming Festival. (Photo: Zhao Hao)