People visit the 31st Mid-Autumn Festival fair in Chinatown in San Francisco, the United States, Sept 11, 2021. The two-day event is held to hail the Chinese Mid-Autumn Festival, which will fall on Sept 21 this year. The fair was closed last year because of the COVID-19 pandemic.[Photo/Xinhua]

People visit the 31st Mid-Autumn Festival fair in Chinatown in San Francisco, the United States, Sept 11, 2021. The two-day event is held to hail the Chinese Mid-Autumn Festival, which will fall on Sept 21 this year. The fair was closed last year because of the COVID-19 pandemic.[Photo/Xinhua]

People visit the 31st Mid-Autumn Festival fair in Chinatown in San Francisco, the United States, Sept 11, 2021. The two-day event is held to hail the Chinese Mid-Autumn Festival, which will fall on Sept 21 this year. The fair was closed last year because of the COVID-19 pandemic.[Photo/Xinhua]