Performers gesture during the media preview of a circus show by Uncle Ringo, in Singapore, Dec. 20, 2019. (Photos: Xinhua)

An acrobat performs during the media preview of a circus show by Uncle Ringo, in Singapore, Dec. 20, 2019.

An acrobat performs during the media preview of a circus show by Uncle Ringo, in Singapore, Dec. 20, 2019.

Acrobats perform during the media preview of a circus show by Uncle Ringo, in Singapore, Dec. 20, 2019.