行将就木（行將就木）　

◎ 行将就木 xíngjiāng-jiùmù

[have one foot in the grave;be getting nearer and nearer to coffin] 寿命不长,就要进棺材了

但老夫行将就木,只求晚年残喘。——清· 吴趼人《痛史》