Commemorative notes with a face value of 50 yuan are issued by the People's Bank of China on December 28, 2018. [Photo: VCG]"

A citizen holds the commemorative coins for the 40th anniversary of China's reform and opening-up she has exchanged at a branch of Agricultural Bank of China in Jiangsu Province on December 28, 2018. [Photo: VCG]"

A citizen holds a wad of commemorative notes with a face value of 50 yuan in Xi'an, Shaanxi Province on December 28, 2018. [Photo: VCG]"

Plenty of citizens wait in line to exchange commemorative coins and notes at a local bank in Taiyuan, Shanxi Province on December 28, 2018. [Photo: VCG]"