People visit pit No.2 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Xinhua/Liu Xiao)

People visit pit No.2 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Xinhua/Liu Xiao)

People visit pit No.2 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Xinhua/Liu Xiao)

People visit pit No.2 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Photo by Zou Jingyi/Xinhua)

People visit pit No.2 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Xinhua/Liu Xiao)

People visit pit No.1 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Xinhua/Liu Xiao)

People visit pit No.2 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Xinhua/Liu Xiao)

People visit pit No.1 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Xinhua/Liu Xiao)

People visit pit No.1 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Xinhua/Liu Xiao)

People visit pit No.1 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Xinhua/Liu Xiao)

People visit pit No.3 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Xinhua/Liu Xiao)

People visit pit No.1 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Xinhua/Liu Xiao)

People visit pit No.2 of the Emperor Qinshihuang's Mausoleum Site Museum in Xi'an, northwest China's Shaanxi Province, April 26, 2023. The Emperor Qinshihuang Mausoleum and Terracotta Warriors were included in the World Heritage list by UNESCO in 1987. (Photo by Zou Jingyi/Xinhua)