Hard to live or die hard.

打字机要是敲得有感情，并不比你的姐妹或者亲戚弹奏钢琴来的扰人。

The Liskov Substitution Principle is a fundamental concept in object-oriented programming, stating that objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program.

最好的家具无需言语就能讲述一个故事。

The best way to live is to love unconditionally.

人生冇take two，所以要好好珍惜。