《三国志·蜀书·蒋琬费祎姜维传》
但是吴国约定的时间接二连三的改变，几次不能实现，确实左右为难，令人寝食难安。
然吴期二三，连不克果，俯仰惟艰，实忘寝食。
However, the Wu state has repeatedly changed the agreed time to meet up, and has failed to follow through several times. This has indeed put us in a difficult position and has caused me sleepless nights.