On October 13, 2023, Vice Foreign Minister Sun Weidong went to Dunhua City, Yanbian Korean Autonomous Prefecture, Jilin Province, to inspect the site of disposing chemical weapons abandoned by Japan in China (Japanese ACWs) in Haerbaling.

Haerbaling is the largest identified burial site of Japanese ACWs in China. Sun Weidong learned in detail the disposal process such as excavation and recovery, identification and package, transportation and custody, and destruction of Japanese ACWs, inspected safety management, visited China's personnel for on-site disposal, and got briefed by Japan's team on the situation of disposal.

When meeting with the responsible person of Japan's disposal team, Sun Weidong solemnly pointed out that Japanese ACWs are one of the severe crimes committed by Japan's militarists during the war of aggression against China. The Chinese government adheres to putting people and their lives front and center, and strongly asks Japan to earnestly shoulder the responsibility and carry out the duty, increase the input across the board, accelerate the work throughout the whole chain, and eliminate the poisonous harm of Japanese ACWs in a complete and thorough manner at an early date on the premise of ensuring personnel's safety and environmental security, so as to return to the Chinese people a clean land. The Japanese side expressed that it takes China's concerns seriously, and it will follow the plan agreed by Japan and China, carry out the disposal in a safe and efficient manner, and make an all-out effort to destroy Japanese ACWs in Haerbaling.