含饴弄孙（含飴弄孫）　

◎ 含饴弄孙 hányí-nòngsūn

[to mouth malt sugars and dally with one‘s grandson——an old man enjoys life with no cares] 含着糖逗小孙子,形容老年人自娱晚年,不问他事的乐趣

后,吾但含饴弄孙,不能复关政矣。——《后汉书·马皇后纪》