A concept map created for Goran tek-en to base the map of the Nùng Autonomous Territory, French Indo-China on.
OpenStreetMap (“© OpenStreetMap contributors”.) and <a href="//commons.wikimedia.org/wiki/User:Donald_Trung" title="User:Donald Trung">Donald Trung</a>.
CC BY-SA 3.0
<p><a rel="nofollow" class="external free" href="https://www.openstreetmap.org/#map=9/21.3585/107.6138">https://www.openstreetmap.org/#map=9/21.3585/107.6138</a> 
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And Microsoft Paint.