The choices are:
1. Xie Xun using 7 Maim Fist to hit a tree trunk; it doesn't even shake the tree in the slightest, and yet the internal "organs" of the tree have all been destroyed.
2. Murong Bo using Veda Scepter to hit a tree trunk; it doesn't shake the tree (presumably), and yet 2 large branches on the tree, located 10 feet away from the point of impact, were struck off.