POLYGON ((116.6855033 20.8547596, 116.6309071 20.8149565, 116.5941695 20.7600846, 116.5797214 20.6967501, 116.5893056 20.6325865, 116.621766 20.5753367, 116.6731874 20.5319171, 116.7373678 20.5075783, 116.8065659 20.5052653, 116.8724354 20.5252581, 116.9270316 20.5651373, 116.9637692 20.6200797, 116.9782173 20.6834462, 116.9686331 20.7475883, 116.9361727 20.8047732, 116.8847512 20.8481147, 116.8205709 20.872399, 116.7513728 20.8747063, 116.6855033 20.8547596))