Photo taken on Aug. 27, 2019 shows pottery figurines during an exhibition at Zhengzhou Museum in central China's Henan Province. The exhibition on major archaeological discoveries and research achievements in Henan in the past 70 years kicked off here on Tuesday, displaying 1,225 sets of exhibits. (Photo: Xinhua)

A visitor takes photos of exhibits during an exhibition at Zhengzhou Museum in central China's Henan Province, Aug. 27, 2019. The exhibition on major archaeological discoveries and research achievements in Henan in the past 70 years kicked off here on Tuesday, displaying 1,225 sets of exhibits. (Photo: Xinhua)

A visitor views an exhibit during an exhibition at Zhengzhou Museum in central China's Henan Province, Aug. 27, 2019. The exhibition on major archaeological discoveries and research achievements in Henan in the past 70 years kicked off here on Tuesday, displaying 1,225 sets of exhibits. (Photo: Xinhua)

Visitors view exhibits during an exhibition at Zhengzhou Museum in central China's Henan Province, Aug. 27, 2019. The exhibition on major archaeological discoveries and research achievements in Henan in the past 70 years kicked off here on Tuesday, displaying 1,225 sets of exhibits. (Photo: Xinhua)

Volunteers explain archaeological knowledge to visitors during an exhibition at Zhengzhou Museum in central China's Henan Province, Aug. 27, 2019. The exhibition on major archaeological discoveries and research achievements in Henan in the past 70 years kicked off here on Tuesday, displaying 1,225 sets of exhibits.(Photo: Xinhua)

Visitors view exhibits during an exhibition at Zhengzhou Museum in central China's Henan Province, Aug. 27, 2019. The exhibition on major archaeological discoveries and research achievements in Henan in the past 70 years kicked off here on Tuesday, displaying 1,225 sets of exhibits.(Photo: Xinhua)

A visitor takes photos of exhibits during an exhibition at Zhengzhou Museum in central China's Henan Province, Aug. 27, 2019. The exhibition on major archaeological discoveries and research achievements in Henan in the past 70 years kicked off here on Tuesday, displaying 1,225 sets of exhibits.(Photo: Xinhua)

Visitors view exhibits during an exhibition at Zhengzhou Museum in central China's Henan Province, Aug. 27, 2019. The exhibition on major archaeological discoveries and research achievements in Henan in the past 70 years kicked off here on Tuesday, displaying 1,225 sets of exhibits.(Photo: Xinhua)

Photo taken on Aug. 27, 2019 shows a bronze plaque during an exhibition at Zhengzhou Museum in central China's Henan Province. The exhibition on major archaeological discoveries and research achievements in Henan in the past 70 years kicked off here on Tuesday, displaying 1,225 sets of exhibits. (Photo: Xinhua)

A visitor views exhibits during an exhibition at Zhengzhou Museum in central China's Henan Province, Aug. 27, 2019. The exhibition on major archaeological discoveries and research achievements in Henan in the past 70 years kicked off here on Tuesday, displaying 1,225 sets of exhibits. (Photo: Xinhua)

Photo taken on Aug. 27, 2019 shows pottery figurines during an exhibition at Zhengzhou Museum in central China's Henan Province. The exhibition on major archaeological discoveries and research achievements in Henan in the past 70 years kicked off here on Tuesday, displaying 1,225 sets of exhibits. (Photo: Xinhua)

A visitor takes photos of an exhibit during an exhibition at Zhengzhou Museum in central China's Henan Province, Aug. 27, 2019. The exhibition on major archaeological discoveries and research achievements in Henan in the past 70 years kicked off here on Tuesday, displaying 1,225 sets of exhibits. (Photo: Xinhua)