Why are the international settlement document centers of the four major banks basically located in Hefei?

It should be said that the international settlement document center of Anhui Branch of the four major banks is in Hefei, because Hefei is the capital of Anhui. The settlement in East China is in Shanghai, and the national settlement center is in Beijing.

Besides, I will teach you an invisible experience. The settlement of foreign exchange by all banks in China goes through China Bank first and then to other banks, so the remittance and settlement of foreign exchange by China Bank is half a day to one day faster than that of other banks.