A fall into the pit, a gain in your wit.
吃一堑，长一智。Experience is the mother of wisdom.
实践出真知。One false step will make a great difference. 失之毫厘，谬一千里。Enough is as good as a feat.
知足常乐。With the development of science and technology, the computers have become more and more advanced.Slow and steady wi
