to throw one's life in for / to haplessly give one's life for / to sacrifice oneself torturously working for another or for a group / to pour in one's utmost effort / to shed one's last ounce of strength for
斤斤计较
jīn jīn jì jiào
to haggle over every ounce / (fig.) to fuss over minor matters / to split hairs
一寸光阴一寸金
yī cùn guāng yīn yī cùn jīn
lit. An interval of time is worth an ounce of gold. (idiom) / fig. free time is to be treasured