Why are there so many foreign currency exchanges in Harbin supermarkets?

Because of competition.

Because there are too many supermarkets and convenience stores in Harbin, and the competition is too great, they will no longer make money, so they all sell out.

Harbin, referred to as "Ha", also known as Ice City, is a prefecture-level city under the jurisdiction of Heilongjiang Province. It is the capital of Heilongjiang Province, the Republic of China, a sub-provincial city, a core city in the Harbin metropolitan area, and a megacity. , an important central city in Northeast my country and an important national manufacturing base approved by the State Council.