I completely agree with @auganov. If OP hasn't looked at the map for a while, Asia definitely is HUGE :) Perhaps start with 1 country--the question would then b

I completely agree with @auganov. If OP hasn't looked at the map for a while, Asia definitely is HUGE :) Perhaps start with 1 country--the question would then become "How do you reach Vietnam?" or "How do you reach Japan?" Which is much more answerable (even if the answer would be pretty long).