龟虽寿（longevity）---曹操 caocao
神龟虽寿，犹有竟时。
every supernatrural tortoise got its life end.
螣蛇乘雾，终为土灰。
every winged snake will become ash in the end.
老骥伏枥，志在千里。
An old horse still got its willpower of thousands miles.
烈士暮年，壮心不已。
An aged hero never let his ambition cease.
盈缩之期，不但在天；
not only God is determining our lifespan;
养怡之福，可得永年。
but also our gratitute helps it expand.
幸甚至哉，歌以咏志。
i am going to sing happlily for what i understand.
