Simply speaking, Alibaba's ranks can be divided into P and M series. Alibaba started from B2B and needed to manage a large number of sales at that time, so it established a strong and leading management system, which is the M series. As the importance of technology continues to increase, the M series is no longer open to middle and lower-level employees, so generally they take the P series, which is the "technology" route. The technology here refers to general technology and professional ability, not computers. So sales can also be P, and those who work in products, operations, and marketing can also be P.