POLYGON ((116.9826599 23.4931121, 116.9823628 23.4933713, 116.9820585 23.4934643, 116.9818194 23.4933248, 116.9816962 23.493152, 116.9818556 23.493039, 116.9821599 23.493059, 116.9824135 23.4930257, 116.9826599 23.4931121))