The sixteen stores in Hefeng Yuan Phase I discharge their sewage to the waste disposal well in the north, the latter of which has a small height difference with the stores. Once there is a slight blockage in the outdoor waste disposal well, the operation of stores will be affected. To safeguard the interests of the store operators, we have repeatedly linked up with relevant personnel from the development department, technical department and property branch of the real estate company and the lessees to visit the scene to investigate and discuss solutions to the problem of frequent sewage overflows in Store D07 in Building 23. Through rectification, the aforesaid problems have been solved with a better business environment for the store operators, which has been praised by the operators.