Two antisubmarine patrol aircraft attached to a naval aviation regiment under the PLA Northern Theater Command receive examination at the parking apron of a military airport in Liaodong Peninsula before the first flight training after Spring Festival holiday on February 20, 2021.Photo:China Military

An antisubmarine patrol aircraft attached to a naval aviation regiment under the PLA Northern Theater Command soars into the sky and heads for the training airspace during the first flight training after Spring Festival holiday on February 20, 2021. Photo:China Military

An antisubmarine patrol aircraft attached to a naval aviation regiment under the PLA Northern Theater Command lands on the runway of a military airport in Liaodong Peninsula during the first flight training after Spring Festival holiday on February 20, 2021.Photo:China Military