Vehicle-mounted radar systems attached to a surface-to-air missile brigade with the air force under the PLA Southern Theater Command use smoke to cover movement during a joint training exercise held by the brigade and a chemical defense unit in late March, 2023. (eng.chinamil.com.cn/Photo by Wang Junfa)

Vehicle-mounted radar systems attached to a surface-to-air missile brigade with the air force under the PLA Southern Theater Command use smoke to cover movement during a joint training exercise held by the brigade and a chemical defense unit in late March, 2023. (eng.chinamil.com.cn/Photo by Wang Junfa)