I just re-examined the draw of Danish and Msia. Even just for the last time, it is quite wierd that Xia XZ, Bao CL, and Chen Yu all in the same 1/16. You can argue that it is mathematically okay provided that Xia was the 3rd seed, Bao was the 13th seed and Chen Yu was unseeded. Now to Danish open, Due to these three's bad luck at Malaysia open, Xia downgrades to the 4th seed, Bao and Chen down grade further as unseeded. But astonishingly, they all still at the same spot of the draw!

What is really going on here???
To give IBF the maximum understanding, all these are okay, then for Xia, the chance at the same spot of the draw is 50%, then for Bao and Chen, the chance are nearly only 1/64 respectively. Therefore, the chance of repeat of this strange draw for these three are 50%*(1/64)*(1/64) = 0.000122.
which means that we need arrange 8192 matches, then this wierd draw could happen again. If we arrange 32 matches for one big 64 players tounament, then we need 256 big tounaments to repeat. If we have 10 big such tounaments a year, we need 25.6 years to wait to see this happen again.
Now we just see this happy again consectively within 2 weeks. IBF is so great that it saves us 25.6 years of waiting to make the miracle happen again!!!