On December 26, a tandem dual-rotor drone with a total weight of nearly 1 ton took off from Dengsha River in Dalian and arrived at Ubon Island in Changhai County. The total flight range was over 400 kilometers, and the longest continuous flight range reached 240 kilometers, marking the successful implementation of the first heavy-duty drone logistics verification flight across the islands in Northeast China.

On December 26, a tandem dual-rotor drone with a total weight of nearly 1 ton took off from Dengsha River in Dalian and arrived at Ubon Island in Changhai County. The total flight range was over 400 kilometers, and the longest continuous flight range reached 240 kilometers, marking the successful implementation of the first heavy-duty drone logistics verification flight across the islands in Northeast China.