Students play the Hulusi under the instruction of teacher Yang Huanyu at an art school at Qujing, southwest China's Yunnan Province, May 11, 2019. Hulusi is a free-reed wind instrument from China. It is made of a gourd with three bamboo pipes inserted into the bottom end of the gourd wind chest. The bamboo pipes consist of one main pipe which has finger holes for making different tones and two drone pipes which can play chord. It is mainly used by minority ethnic groups in Yunnan province and it has a clarinet-like sound. (Xinhua/Yang Zongyou)