There are hints. Tangquan Liangzi is a brand owned by Beijing Tangquan Liangzi Club, which focuses on Japanese warm style and provides fitness, health care and various leisure and entertainment activities. The brand name comes from the concept of "good children, good medicine and good technology, making conscience money", aiming to gain social recognition with integrity and excellent technology. Because the recharge member has to bind the mobile phone number, there will be a reminder when the member consumes. Beijing, referred to as "Beijing", is the capital of People's Republic of China (PRC). One of the four municipalities directly under the Central Government and the second largest city in China. It is a national political center, cultural center, international exchange center and scientific and technological innovation center. It is a world-famous ancient capital and a modern international city. Beijing has a history of more than 3000 years and 850 years. It is the city with the most world cultural heritage in the world.