One Chinese sailor died and two others lost consciousness on Sunday due to suspected gas asphyxiation in Thanh Hoa Province, north-central Vietnam. Border guards and other agencies in Thanh Hoa Province, Vietnam rush the victims to the hospital. One Chinese sailor died and two others lost consciousness on Sunday due to suspected gas asphyxiation in Thanh Hoa Province, north-central Vietnam. Border guards and other agencies in Thanh Hoa Province, Vietnam rush the victims to the hospital. The Thanh Hoa authorities are investigating the cause of the case and working with diplomatic agencies to hand over the body of the deceased.