SRID=4326;POLYGON((113.535 22.22,113.61 22.21,113.635 22.17,113.635 22.105,113.61 22.07,113.565 22.075,113.565 22.095,113.545 22.105,113.545 22.115,113.535 22.12,113.535 22.14,113.545 22.145,113.525 22.17,113.525 22.185,113.535 22.22))