A visitor takes photos of mask exhibits during an exhibition in Nanfeng County, east China's Jiangxi Province, Sept. 27, 2019. The exhibition on masks kicked off here on Friday, with 610 masks from all around the world on display. (Photos: Xinhua)

A visitor takes photos of mask exhibits during an exhibition in Nanfeng County, east China's Jiangxi Province, Sept. 27, 2019. The exhibition on masks kicked off here on Friday, with 610 masks from all around the world on display.

A visitor takes photos of mask exhibits during an exhibition in Nanfeng County, east China's Jiangxi Province, Sept. 27, 2019. The exhibition on masks kicked off here on Friday, with 610 masks from all around the world on display.

A visitor takes photos of mask exhibits during an exhibition in Nanfeng County, east China's Jiangxi Province, Sept. 27, 2019. The exhibition on masks kicked off here on Friday, with 610 masks from all around the world on display.

Visitors view mask exhibits during an exhibition in Nanfeng County, east China's Jiangxi Province, Sept. 27, 2019. The exhibition on masks kicked off here on Friday, with 610 masks from all around the world on display.

A visitor takes photos of mask exhibits during an exhibition in Nanfeng County, east China's Jiangxi Province, Sept. 27, 2019. The exhibition on masks kicked off here on Friday, with 610 masks from all around the world on display.

A visitor takes photos of mask exhibits during an exhibition in Nanfeng County, east China's Jiangxi Province, Sept. 27, 2019. The exhibition on masks kicked off here on Friday, with 610 masks from all around the world on display.