Shanhe Asked

When Gu Shanhe was fifteen, his mother died. He didn't know what to do next, so he walked into the mountains. There was an old man in the mountains, sitting on a stone looking down the mountain, waiting for thirty years for someone who would never come back. There was a man in the mountains who had been carving wood in the bamboo forest for thirty years, until he forgot who he was. There was a monk in the mountains who had been sweeping the land for fifty years. After sweeping, it would fall off, and he would sweep again after sweeping. He met these people and saw how they lived, how they waited, how they endured, and how they died. He was also deceived, harmed, saved, and loved. He also kills and saves, hates and loves. After living for 90,000 years, I finally sat on the beach of Chaos and looked back—— Those things have been done, and those people are no longer here. He is still alive. Someone asked him: What have you achieved after practicing all your life? He thought for a while and said: I have solved a problem. What's the problem? Who are you?