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Tourists visit a commercial street in Yuzhong District in southwest China's Chongqing Municipality, Feb. 10, 2023. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)

Tourists have fun at a night fair in Nan'an District in southwest China's Chongqing Municipality, Feb. 9, 2023. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)

This aerial photo taken on Feb. 9, 2023 shows a night fair in Nan'an District in southwest China's Chongqing Municipality. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)

Tourists visit a traditional scenic area in Yuzhong District in southwest China's Chongqing Municipality, Feb. 10, 2023. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)

Tourists visit a traditional scenic area in Yuzhong District in southwest China's Chongqing Municipality, Feb. 10, 2023. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)

Tourists visit a commercial street in Yuzhong District in southwest China's Chongqing Municipality, Feb. 10, 2023. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)

A vendor passes drink to a customer at a night fair in Nan'an District in southwest China's Chongqing Municipality, Feb. 9, 2023. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)

A vendor cooks at a night fair in Nan'an District in southwest China's Chongqing Municipality, Feb. 9, 2023. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)

Tourists have fun at a night fair in Nan'an District in southwest China's Chongqing Municipality, Feb. 9, 2023. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)

Tourists have fun at a night fair in Nan'an District in southwest China's Chongqing Municipality, Feb. 9, 2023. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)

Chinese Xiangsheng or crosstalk artists perform at a traditional scenic area in Yuzhong District in southwest China's Chongqing Municipality, Feb. 10, 2023. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)

Tourists eat Chongqing hotpot at a traditional scenic area in Yuzhong District in southwest China's Chongqing Municipality, Feb. 10, 2023. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)

This aerial photo taken on Feb. 10, 2023 shows a night view of Yuzhong District in southwest China's Chongqing Municipality. Chongqing has launched a variety of activities at nighttime to boost night economy since the beginning of this year. (Xinhua/Huang Wei)