Talk about the most important lesson I learned today.

(1) Because I lied, my father felt deeply guilty and decided to take 18 Li Road to educate his son. First, I feel guilty. Secondly, I feel sorry for my father, because he would rather walk a long way home than take a bus, fearing that this would be the "most painful lesson" in life.

(2) Although it is painful, I will never lie through my father's words and deeds in my later life, so it is also the most successful lesson.