Lin Feng had just finished his day's work, selling some tofu at the foot of the mountain. He was a ordinary young man, with no special hobbies except for watching others practice martial arts. He found it quite fascinating.

One day, while watching a group of martial artists demonstrate their skills, Lin Feng noticed a mysterious old man in the crowd. The old man was wearing tattered clothes and had a long white beard. He seemed to be an outcast, ignored by the others.

Lin Feng could not help but be curious about the old man. He walked over and started a conversation. "Excuse me, old man, are you one of the martial artists?" Lin Feng asked.

The old man looked up and smiled. "I am not a martial artist, but I have seen them all. I have traveled the world and watched many people practice martial arts."

Lin Feng was impressed by the old man's knowledge. "What's your name?" he asked.

"I am Chang Qing," the old man replied. "I have been looking for a successor to my martial arts legacy. I see that you have a passion for martial arts, Lin Feng."