People watch a demonstration of an unmanned remote tower crane working at a construction site in Huangdao District of Qingdao, east China's Shandong Province, Sept. 18, 2024. China Construction Eighth Engineering Division launched its self-developed new generation of unmanned remote tower crane in Qingdao on Wednesday. (Xinhua/Li Ziheng)

An aerial drone photo shows an unmanned remote tower crane during a demonstration at a construction site in Huangdao District of Qingdao, east China's Shandong Province, Sept. 18, 2024. China Construction Eighth Engineering Division launched its self-developed new generation of unmanned remote tower crane in Qingdao on Wednesday. (Xinhua/Li Ziheng)

An aerial drone photo shows an unmanned remote tower crane during a demonstration at a construction site in Huangdao District of Qingdao, east China's Shandong Province, Sept. 18, 2024. China Construction Eighth Engineering Division launched its self-developed new generation of unmanned remote tower crane in Qingdao on Wednesday. (Xinhua/Li Ziheng)

A launching ceremony of an unmanned remote tower crane is held in Qingdao, east China's Shandong Province, Sept. 18, 2024. China Construction Eighth Engineering Division launched its self-developed new generation of unmanned remote tower crane in Qingdao on Wednesday. (Xinhua/Li Ziheng)