Two days. Ruixing's manager received the interview results about two days after the interview, went to systematic training for one day, and then taught himself for a few days to pass the exam. Headquartered in Xiamen, Luckin Coffee is the largest chain coffee brand in China. Luckin Coffee takes the brand vision of "Let every customer enjoy a cup of delicious and worthwhile coffee" and the brand mission of "Building a world-class coffee brand from China", and makes full use of the new retail model of mobile Internet and big data technology to cooperate with top suppliers in various fields.