This is the first time when not only all user comments but also the IMDb.com's official plot summary misses the point completely.
Well, as it's one fine oriental story, this is nothing to be terribly ashamed of. Let me help you a bit:
Hint #1: Where is Ang Lee born? Yes, right - in Taiwan. So what? Ha, let me explain - can you name a country that Taiwanese people fear the most? Hai, you are right again - this is China. So don't expect too positive approach towards the People's Republic of China here.
Hint #2: (As one comment already correctly mentioned it) the boy (and the monks) are Tibetans. What did Chinese do to Tibet in 1949-1950? They invaded an independent country and Tibet is occupied since then. What happened to unique Tibetan culture under Chinese rule? It was systematically destroyed. Not a good example for Taiwanese people..
**** SPOILERS START *****
The boy is "chosen for a strange ritual" :) I think we can be more precise now. What is the greatest ritual in Tibet? The finding of the next Dalai Lama, The Chosen One.
**** SPOILERS END *****
Only one piece of this fine oriental mystery left unsolved - who are the bad guys, then? No, i can't tell you, i already wrote SPOILERS END above here.. :)
I gave it 7 points out of 10, because it is impossible to join the commercial and oriental art. But Ang Lee's masterpiece gives us fine example how close we can get.