VietNam Map Puzzle app for iPhone and iPad

Vietnam Map Puzzle is being developed with the aim of helping people remember the name and location of provinces in Vietnam. We, the developers hope that people from pupils to foreigners would understand more about Vietnam.
Vietnam Map Puzzle has 3 playing levels:
[Training] At level Training, the name of provinces and the borders are displayed, the players can easily find the location of provinces in Vietnam Map.
[Basic] At level Basic, the game is more difficult. Now the screen only displays the name of the provinces but not display the borders between the provinces.
[Expert] At level Expert, the player has no longer any assistance. The name of provinces and the borders are completely hidden. Overcome this level, you’re really an excellent player