治本

治本	zhì běn	to tackle a problem at its root; to effect a permanent solution (contrasted with 治标)
治	zhì	to rule / to govern / to manage / to control / to harness (a river) / to treat (a disease) / to wipe out (a pest) / to punish / to research
本	běn	(bound form) root; stem / (bound form) origin; source / (bound form) one's own; this / (bound form) this; the current (year etc) / (bound form) original / (bound form) inherent / originally; initially / capital; principal / classifier for books, periodicals, files etc