劈理

劈理	pī lǐ	(mining) cleavage
劈	pī	to hack / to chop / to split open / (of lightning) to strike
劈	pǐ	to split in two / to divide
理	lǐ	texture / grain (of wood) / inner essence / intrinsic order / reason / logic / truth / science / natural science (esp. physics) / to manage / to pay attention to / to run (affairs) / to handle / to put in order / to tidy up