Update README.md

README.md

@@ -3,11 +3,13 @@ world-geo-json-zh
 [![](https://img.shields.io/github/license/Surbowl/world-geo-json-zh)](https://github.com/Surbowl/world-geo-json-zh/blob/main/LICENSE)
 [![](https://img.shields.io/github/package-json/v/Surbowl/world-geo-json-zh)](https://github.com/Surbowl/world-geo-json-zh/releases)
 
-简体中文 Geo JSON 世界地图，带有国家（地区）的 ISO 3166 代码、中文简称与全称。
+简体中文 Geo JSON 世界地图，带有国家（地区）的 ISO 3166 代码、中文简称与全称。含中国南海海域十段线。
 
 A simplified Chinese world map in GeoJSON format, including ISO 3166 codes, Chinese short names, and full names of countries (regions).
 
-👉 [See Demo](https://surbowl.github.io/world-geo-json-zh/demo-echarts.html)
+🌏 [Data](https://github.com/Surbowl/world-geo-json-zh/blob/main/world.zh.json)
+
+👀 [Demo](https://surbowl.github.io/world-geo-json-zh/demo-echarts.html)
 
 Install
 --------