Maintenance men assigned to a brigade with the air force under the PLA Southern Theater Command perform inspections on a fighter jet before a night training exercise on May 26, 2021. (Photos: eng.chinamil.com.cn)

Fighter jets attached to a brigade with the air force under the PLA Southern Theater Command sit in the hangars waiting for the start of a night training exercise on May 26, 2021.

Fighter jets attached to a brigade with the air force under the PLA Southern Theater Command taxi on the runway to get ready for a night training exercise on May 26, 2021.