Please keep this "May Day" holiday safety tips Please keep this "May Day" holiday safety tips Please keep this "May Day" holiday safety tips Please keep this "May Day" holiday safety tips Please keep this "May Day" holiday safety tips Please keep this "May Day" holiday safety tips Please keep this "May Day" holiday safety tips Please keep this "May Day" holiday safety tips Please keep this "May Day" holiday safety tips Please keep this "May Day" holiday safety tips Source: Ministry of Emergency Management of the People's Republic of China