liǎng tóu
both ends
both parties to a deal
sān tiān liǎng tóu
lit. twice every three days (idiom); practically every day
frequently
liǎng tóu r
erhua variant of 兩頭|两头[liang3 tou2]
là zhú liǎng tóu shāo
to burn the candle at both ends (idiom)
to labor under a double burden