Import boundary of Japan from OSM to OHM.

Qing (the same boundary with ROC in 1912).

Korea in 1948-1953.

Import boundary of Korea from OSM to OHM.

Fix end of R.O.C in 1971-

Fix of China in 1912-1945

Import boundary of Tuva from OSM, and create China in 1912-1945.

Import boundary of Tuva from OSM, and create China in 1912-1945.

Import boundary of Mongolia from OpenStreetMap.

Import boundary of Mongolia from OpenStreetMap.

China in 1945-1949, and name improved.

Fix for render. 傻逼渲染。

Date of British Hong Kong

China after 1949

Transfer of sovereignty over Macau and Hong Kong

Import boundary of Portuguese Macau (1887-1999) from OpenStreetMap.

Import boundary of British Hong Kong (1842-1997) from OpenStreetMap.

Import boundary of P.R.C (1999-now) from OpenStreetMap.

Import boundary of P.R.C (1999-now) from OpenStreetMap.

Import boundary of P.R.C (1999-now) from OpenStreetMap.