I’m a native Vietnamese, and when I saw Vietnam looks worse than North Korea on OSM, I knew what I have to do :)

• How did you contribute? - https://hdyc.neis-one.org/?CactiStaccingCrane
• OpenStreetMap Vietnam, where I post my stuff there regularly - https://www.facebook.com/groups/openstreetmapvietnam
• My diary, but I don’t post there often - https://www.openstreetmap.org/user/CactiStaccingCrane/diary