A man went to ask the master, and she asked him why he couldn't let go. He gave her a drink without saying anything.

Then the master poured hot water and the water overflowed. Her hand was burned and she naturally let go. The master said: nothing can't be let go. She said that's not his cup. Then she took out a cup from her bag. The master filled the water again and it overflowed. Her expression was ferocious, but she never let go. The master said: There are still many things I haven't understood yet, so I traveled around and continued my practice.