Local residents try origami, or the art of paper folding, during an event held at Taiyuan Library in Taiyuan, capital of north China's Shanxi Province, Feb. 20, 2019. (Xinhua/Cao Yang)

Local residents try origami, or the art of paper folding, during an event held at Taiyuan Library in Taiyuan, capital of north China's Shanxi Province, Feb. 20, 2019. (Xinhua/Cao Yang)

A girl displays her paper folding work, or origami, during an event held at Taiyuan Library in Taiyuan, capital of north China's Shanxi Province, Feb. 20, 2019. (Xinhua/Cao Yang)

Local residents try origami, or the art of paper folding, during an event held at Taiyuan Library in Taiyuan, capital of north China's Shanxi Province, Feb. 20, 2019. (Xinhua/Cao Yang)