You can't. According to the provisions of the Law on the Prevention and Control of Air Pollution in People's Republic of China (PRC), it is forbidden to build, rebuild or expand catering services that produce oil smoke, odor and waste gas in residential buildings, commercial and residential buildings without special flues, and commercial floors adjacent to residential floors in commercial and residential buildings. Therefore, Xipu brine pickling industry cannot buy brine at the bottom of residential buildings. Xipu Street is located in the east of Pidu District, Chengdu, Sichuan Province, adjacent to jinniu district and Gaoxin West District of Chengdu, and in the heart of the land of abundance.