From the end of May to the beginning of June. Official website, Education Bureau of Xishan District, Kunming City, shows that it is known that in 2023, Xiaoshengchu in Xishan District of Kunming City will be from the end of May to the beginning of June. The lottery at the beginning of Xiaoshengchu means that the number of applicants is greater than the actual number of students admitted, so random allocation is used to decide which children to enroll.