Illuminated lanterns are seen at a lantern fair at Shanzhou Silo-Cave, a scenic area of ancient underground dwellings in Sanmenxia city, central China's Henan province, Jan 9, 2020. (PHOTO / XINHUA)

Photo taken through a fish-eyed lens shows illuminated lanterns at a lantern fair at Shanzhou Silo-Cave, a scenic area of ancient underground dwellings in Sanmenxia city, central China's Henan province, Jan 9, 2020. (PHOTO / XINHUA)

A tourist takes a photo of an illuminated lantern at a lantern fair at Shanzhou Silo-Cave, a scenic area of ancient underground dwellings in Sanmenxia city, central China's Henan province, Jan 9, 2020. (PHOTO / XINHUA)

Lanterns are lighted up at a lantern fair at Shanzhou Silo-Cave, a scenic area of ancient underground dwellings in Sanmenxia city, central China's Henan province, Jan 9, 2020. (PHOTO / XINHUA)

This photo taken on Jan 9, 2020 shows two illuminated swan lanterns at a lantern fair at Shanzhou Silo-Cave, a scenic area of ancient underground dwellings in Sanmenxia city, central China's Henan province. (PHOTO / XINHUA)

Tourists visit a lantern fair at Shanzhou Silo-Cave, a scenic area of ancient underground dwellings in Sanmenxia city, central China's Henan province, Jan 9, 2020. (PHOTO / XINHUA)