正负

正负	zhèng fù	positive and negative
正	zhēng	first month of the lunar year
正	zhèng	straight / upright / proper / main / principal / to correct / to rectify / exactly / just (at that time) / right (in that place) / (math.) positive
负	fù	to bear / to carry (on one's back) / to turn one's back on / to be defeated / negative (math. etc)