Who am I and what song is it to be a joke?

I've changed. I haven't changed. By inquiring about the introduction information of the song "I have changed, I have not changed", it shows that this song was sung by singer Aska Yang and the lyrics were excerpted. Every day is like a year, year after year. Over time, who I am has become a joke. I have made so many changes just to keep my original heart. The song "I have changed, I have not changed" has a cheerful melody, lively rhythm and full of movement. At the same time, it is full of sensibility and thinking. It is the masterpiece of the richest man in the times.