click to show/hide spoilersin wuxiapedia, facts section about DGSD, one of the officials in dali had two beads inbeaded in his chest two vital accupoints by murong bo and attempts to remove them were impossible due to the pain it caused. also, murong bo used the canhe zhi to injure the yellow brow monk over the left side of his chest leaving an inch deep hole, it was only because the yellow brow monk was born with his heart on the right side that he survived. YBM thought the skill MRB used was shaolin's vijra zhi(YBM's skill) because through there was some differences in the execution, the power was equal to vijra zhi. YBM was 30yrs old at this time and MRB was only 15yrs old.
yiyang zhi is capable of LDA as well, but it is a more gentle and luxirient sort of power, while the canhe zhi seems hard like shaolin finger skills(like vijra zhi and flower rubbing finger). 6MDS uses qi channeled through the finger to execute sword moves while yiyangzhi channels qi to seal accupoints. their different sort of skills through with similarities. canhe zhi should be more equal to yiyangzhi or TZTSG(HYS).