June 2023 10 to 1 1. According to the official information released by the continuing education department of Lanzhou Jiaotong University, the two-level public defense of Lanzhou Jiaotong University's graduation thesis in 2023 was held in the second, eighth and ninth teaching buildings 176, respectively, and 564 17 undergraduate graduates from the second-level college participated in this public defense. The defense time is from June 10 to June 1 1 2023.