The Jiutian simulations for the CSST extra-galactic surveys - Han, Jiaxin; Li, Ming; Jiang, Wenkang; Chen, Zhao; Wang, Huiyuan; Wei, Chengliang; He, Feihong; He, Jianhua; Zhang, Jiajun; Liu, Yu; Cui, Weiguang; Gu, Yizhou; et al. (SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2025)