When the pilot landed Sin immediately attempted to trap him in stone, only to have him backflip out of the way while removing his parachute.  The pilot ran at Sin, dodging any attacks Sin threw at him.  Sin attempted to trade blows with him, but the man was too nimble and dodged any bending or normal attacks Sin used.  Eventually Sin lost the initiative and went on the defensive.  This was what the enemy was waiting for.  As soon as he saw an opening the enemy pilot struck Sin in several pressure points.  Sin instantly felt weaker, but he was determined to beat the man.

If the man could dodge stones, maybe Sin needed to change the field to turn things in his favor.  He punched the ground to turn it to Lava, but nothing happened.  He tried again, but still nothing.  That's when Sin understood the reason the Pilot was such a good fighter.  "Chi-blocker!" he called out.