Technical:
- Valid xHTML
- jQuery with Interface plugin

Special thanks:
- Google Map
- Vi Wikipedia
- Đào Trần Minh (My teacher ^^)

Tested on:
- Firefox
- Internet Explorer
- Opera
- Safari

Instructions:
Drag either Paracel Islands or Sparaly Islands and drop it into Vietnam or China, you will get the true answer.

Bug:
Don't know how to move islands exactly into areas. You can move items into 2 assigned areas, which flashes when you start dropping. It will be fixed soon or... never (if I don't have time )