Macau land silhouette

Derived from OpenStreetMap natural=coastline ways in the bounding box
(22.09, 113.51, 22.23, 113.63), intersected with the existing Macau districts.
OSM data snapshot: 2026-06-01T08:52:28Z.
Retrieved from https://overpass.private.coffee/api/interpreter
Generated by scripts/build-macau-land.mjs.
OpenStreetMap contributors: https://www.openstreetmap.org/copyright
Open Database License (ODbL): https://opendatacommons.org/licenses/odbl/1-0/

Mainland city and district boundaries

Source: Alibaba DataV GeoAtlas
https://geo.datav.aliyun.com/areas_v3/bound/{adcode}.json
https://geo.datav.aliyun.com/areas_v3/bound/{adcode}_full.json
City outlines and district source vertices are retained at six decimal places.

Hong Kong land silhouette

Derived from OpenStreetMap coastline data, distributed by:
https://github.com/bmkor/hk_osm_map
Pinned source blob: 33c32099a4c2053f4f0556c1b75cbf9647ffae1a
This is a historical coastline snapshot; subsequent reclamation is not represented.

OpenStreetMap contributors: https://www.openstreetmap.org/copyright
Open Database License (ODbL): https://opendatacommons.org/licenses/odbl/1-0/

Repository notice:
MIT License

Copyright (c) 2017 Benjamin

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Chongqing district boundaries (November 2025 administrative adjustment)
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Copyright (c) 2025 GeoJSON.CN
Source: https://geojson.cn/api/china/500000.json
Source website: https://geojson.cn
Dataset version: 1.6.3, dated 2025-12-14T16:22:47.308Z.
Original polygon coordinates are retained in the district map. The compact
national city index rounds its copy to a 0.01-degree grid.

Administrative names and changes checked against:
https://www.cq.gov.cn/zjcq/sqgk/cqsq/202601/t20260125_15350959.html
https://www.beibei.gov.cn/zjbb/xzqh/201912/t20191214_1182578.html

The map uses 37 current districts. Liangjiang replaces Jiangbei and Yubei,
with Shuitu, Fuxing, Caijiagang, Shijialiang and Tongjiaxi transferred from
Beibei to Liangjiang. Dawan, Tongjing, Dasheng, Xinglong and Cizhu are
transferred from former Yubei to Beibei. Historical visit records are shown
under current district names, as requested by the site owner.