Photo taken on July 6, 2019 shows the night view of an amusement park in Chongqing, southwest China. (Xinhua/Liu Chan)

Visitors enjoy themselves at an amusement park at dusk in Chongqing, southwest China, July 6, 2019. (Xinhua/Liu Chan)

Photo taken on July 6, 2019 shows the night view of an amusement park in Chongqing, southwest China. (Xinhua/Liu Chan)

Visitors enjoy themselves at an amusement park at night in Chongqing, southwest China, July 6, 2019. (Xinhua/Liu Chan)

Visitors enjoy themselves at an amusement park at night in Chongqing, southwest China, July 6, 2019. (Xinhua/Liu Chan)