Photo shows an aircraft carrier in snow created by students and teachers from Harbin Engineering University as heavy snow hit Harbin, capital of northeast China's Heilongjiang Province, Nov. 23, 2020. (Photo/China News Service)

Photo shows a submarine in snow created by students and teachers from Harbin Engineering University as heavy snow hit Harbin, capital of northeast China's Heilongjiang Province, Nov. 23, 2020. (Photo/China News Service)

Photo shows a navy fleet in snow created by students and teachers from Harbin Engineering University as heavy snow hit Harbin, capital of northeast China's Heilongjiang Province, Nov. 23, 2020. (Photo/China News Service)

Photo shows a lifeboat and China's new deep-sea manned submersible Fendouzhe, or Striver in snow created by students and teachers from Harbin Engineering University as heavy snow hit Harbin, capital of northeast China's Heilongjiang Province, Nov. 23, 2020. (Photo/China News Service)