Soldiers assigned to a missile brigade under the PLA Rocket Force prepare to erect ballistic missile systems into positions during a training exercise in late February, 2020. Photo: China Military

DF-16 ballistic missile systems attached to a missile brigade under the PLA Rocket Force get ready to be launched at night after being erected into positions at the launching pads during a night training exercise in late February, 2020. Photo: China Military

A truck-mounted DF-21A medium-range ballistic missile system attached to a missile brigade under the PLA Rocket Force is erected at night during a night training exercise in late February 6, 2020. Photo: China Military

A soldier assigned to a missile brigade under the PLA Rocket Force operates an optical sighting device to assist the erection of a DF-21A medium-range ballistic missile system during a night training exercise in late February, 2020. Photo: China Military