Beijing, March 21 (Youth.cn) - On March 20, 2025, in Hunan, emergency teams staged a breathtaking aerial rescue simulation along the vertiginous cliffs of Zhangjiajie National Forest Park’s Tianzi Mountain cable system. The high-wire exercise tested contingency plans and operational readiness through meticulously choreographed maneuvers 1,200 meters above the sandstone pinnacles. Photo/CFP