Asian Robin Hood

Splitting an arrow with wood shafts is going to be extremely difficult because of the difficulty in getting a shaft with wood grain that is uniformly parallel to the shaft. Modern aluminum or fiberglass tubular shafts would make it much easier, as would bamboo shafts, which are already tubular in nature. Regardless of the shaft construction, though, the nock, which has to be sturdy enough to take the stress of shooting the arrow, would have to split cleanly in order that the second arrow not deflect -- you will note in the video that the arrow in the target has no visible nock; it is not clear whether it was shot without a proper nock so that the hollow center of the shaft remained unobstructed, or whether the nock on the first arrow was removed after it hit the target.

This old fan of field archery is impressed. Looks like something Howard Hill would have easily mastered back in the day.

My mythbusters had it right, your comparing something completely different here. The tube is completely open (nothing capping it) on this target arrow ... and its a tube.

What you should be investigating is this guy versus the mythbusters ...

http://tv.sky.com/video-extreme-marksmen

if there aren't lots of people who can do exactly the same thing, that's good enough for me to say WOW! kudos to that Korean dude.

Distance?

I've seen someone do this exact same thing at about 20 yards.