four stars. According to the website of China Hotel, Jingu Mansion is a four-star luxury business hotel integrating guest room, catering, entertainment and shopping, and has passed the ISO9112 international quality system certification. Jingu Mansion, a well-known hotel in China, belongs to Heilongjiang Agricultural Investment Group Co., Ltd. It is a four-star luxury business hotel integrating guest rooms, catering, entertainment and shopping, and can host large banquets, corporate annual meetings, cocktail parties and press conferences.