Day line, strives constantly forself-improvement.
Mountain is not high, with fairy is name; Water is not deep, with dragons are spirit.
Two people to make their sharpness can cut through met...
英语翻译居安思危,有备无患.有朋自远方来,不亦说乎?天行健,君子以自强不息.山不在高,有仙则名；水不在深,有龙则灵.二人