A child visits a replica of a skull of Peking Man during the Zhoukoudian Site Cultural Exhibition at the Hainan Museum in Haikou, south China's Hainan Province, July 30, 2024playrouletteforfunfree. The Zhoukoudian Site Cultural Exhibition opened here on Tuesday with a total of 139 pieces of exhibits from the Zhoukoudian Site Museum in Beijingplayrouletteforfunfree. (Xinhua/Guo Cheng)

Visitors view exhibits during the Zhoukoudian Site Cultural Exhibition at the Hainan Museum in Haikou, south China's Hainan Province, July 30, 2024. The Zhoukoudian Site Cultural Exhibition opened here on Tuesday with a total of 139 pieces of exhibits from the Zhoukoudian Site Museum in Beijing. (Xinhua/Guo Cheng)

Visitors view an exhibit during the Zhoukoudian Site Cultural Exhibition at the Hainan Museum in Haikou, south China's Hainan Province, July 30, 2024. The Zhoukoudian Site Cultural Exhibition opened here on Tuesday with a total of 139 pieces of exhibits from the Zhoukoudian Site Museum in Beijing. (Xinhua/Guo Cheng)

Visitors view exhibits during the Zhoukoudian Site Cultural Exhibition at the Hainan Museum in Haikou, south China's Hainan Province, July 30, 2024. The Zhoukoudian Site Cultural Exhibition opened here on Tuesday with a total of 139 pieces of exhibits from the Zhoukoudian Site Museum in Beijing. (Xinhua/Guo Cheng)

Visitors view exhibits during the Zhoukoudian Site Cultural Exhibition at the Hainan Museum in Haikou, south China's Hainan Province, July 30, 2024. The Zhoukoudian Site Cultural Exhibition opened here on Tuesday with a total of 139 pieces of exhibits from the Zhoukoudian Site Museum in Beijing. (Xinhua/Guo Cheng)

Visitors view exhibits during the Zhoukoudian Site Cultural Exhibition at the Hainan Museum in Haikou, south China's Hainan Province, July 30, 2024. The Zhoukoudian Site Cultural Exhibition opened here on Tuesday with a total of 139 pieces of exhibits from the Zhoukoudian Site Museum in Beijing. (Xinhua/Guo Cheng)