When is the membership day?

5th,15th, 25th. According to official website of Yishu Pharmaceutical Co., Ltd., the 5th,15th and 25th of each month are Yishu member days, and 58 lira will be purchased on that day, with a reduction of 10 yuan. Yishu Pharmaceutical Co., Ltd. was established in March 1999, with more than 200 stores and more than 4,500 employees, covering 77 districts and counties in Guizhou, with an operating income of nearly 3 billion yuan, more than 20,000 varieties and nearly 5 million registered members.