SocioVerse: A World Model for Social Simulation Powered by LLM Agents and A Pool of 10 Million Real-World Users - Zhang, Xinnong; Lin, Jiayu; Mou, Xinyi; Yang, Shiyue; Liu, Xiawei; Sun, Libo; Lyu, Hanjia; Yang, Yihang; Qi, Weihong; Chen, Yue; Li, Guanying; Yan, Ling; et al. (2025)