Be Invincible at the Beginning

This is an old man's inner self-statement: I have been practicing martial arts for more than fifty years. I started practicing martial arts at the age of ten and had many adventures. At the age of twenty, I learned a profound martial arts. At the age of thirty-five, my martial arts has reached an advanced level. At the age of forty-five, I realized that I had no more progress behind closed doors, so I went out to challenge the masters in the world. Finally, at the age of fifty-eight, I became the supreme martial arts master in the world. Unexpectedly, there is a world outside the sky, and there are people outside the world! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.