What is the cheapest monthly bicycle pass in Nanjing?

Mobike. Nanjing, referred to as "Ning", was known as Jinling and Jiankang in ancient times. It is the capital of Jiangsu Province, a sub-provincial city, a megacity, the core city of the Nanjing Metropolitan Area, and an important central city in eastern China approved by the State Council. The Mobike monthly pass is the cheapest here because the bike has launched a two-week monthly pass promotion, which allows you to ride for a monthly fee for only 4 yuan. This place is an important scientific research and education base and comprehensive transportation hub in the country.