Sign up. After inquiring about the relevant information, it is necessary to distribute leaflets or scan the QR code of the activity to register at the nearest training venue until the quota is full. Changchun, formerly known as Xi Du and Chachong, is a prefecture-level city, provincial capital, sub-provincial city and I-type big city, and is the core city of Harbin-Changzhou urban agglomeration under the jurisdiction of Jilin Province. It is one of the central cities and important industrial bases in Northeast China approved by the State Council.