Shanxi, Shaanxi and Gansu Provincial hall. Kaifeng city, Henan province. This beautiful hall as a government house was established during Song dynasty flourishing time. The merchants born in Gansu, Shanxi and Shaanxi who had done trade in the prosperous city of Kaifeng has found it. They united their efforts to create a guild of three North West province union and to facilitate the business operations, if it says nowadays. The buildings are really beautiful and reflect that prosperous time and great success.