The tripartite 4.2 ka event in East Asia: Stalagmite evidence and its interregional implications - Zhenqiu Zhang; Weihong Zhang; Zhiyuan Shang; Jianshun Chen; Yijia Liang; Qingfeng Shao; Kan Zhao; Yongqiu Wu; Yongjin Wang (Global and Planetary Change, 2026)