The world's smallest banknote is the 1 yuan note issued by the People's Republic of China. It holds the title of the smallest paper currency in circulation, measuring approximately 120 mm x 60 mm. The front side of the note features a portrait of Mao Zedong, the founding father of the People's Republic of China, while the reverse side depicts a picturesque view of the Yangtze River. Despite its diminutive size, the 1 yuan note is widely used in daily transactions across China. Its small dimensions make it convenient for handling and storing, contributing to its popularity as a common form of currency in the country.