析骸以爨

Etymology

 * Warring States Period: Zuo Qiuming, Zuo Zhuan (春秋左氏傳˙宣公十五年)
 * 敝邑易子而食，析骸以爨.
 * In the city we are exchanging our children and eating them, and splitting up their bones for fuel. (James Legge)

Idiom

 * 1) the situation is dire (i.e. during wartime or famine)