A Chinese police representative (L, front) and his Vietnamese counterpart (R, front) sign procedures of transfering a Chinese suspect at the Noi Bai International Airport in Hanoi, Vietnam, on April 5, 2016. The Vietnamese police transferred a Chinese suspect to their Chinese counterpart here on Tuesday at the Noi Bai International Airport. This is the first important achievement of the Joint Operation Two on Capturing Escaped Suspects between China and Vietnam's public security ministries. (Xinhua/Yan Jianhua)