Mezzo-soprano Sun Xueman (L) from China National Opera House instructs a student in singing at a lecture in Pengshui Miao-Tujia Autonomous County, southwest China's Chongqing Municipality, Jan. 12, 2020. Artists from China National Opera House staged a benefit performance in the poverty-stricken Pengshui Miao-Tujia Autonomous county. (Xinhua/Wang Quanchao)