According to Zhihu's inquiry, Gemstone Flower Property Management Co., Ltd. was established on 20 18 10 26, and its legal representative is Zhang Xiaojun. Its address is Room 0 1 10, Block A, No.8989 Shangji Road, Xi Economic and Technological Development Zone, and its industry is real estate. PetroChina is the largest producer and seller of oil and gas in China, a state-owned enterprise, one of the largest sales companies in China and one of the largest oil companies in the world. So there is no relationship between the two.