This is my secret, a secret that some people know, some don't know, some understand, and some don't understand. In countless dark nights, it started from a seed and slowly grew, occupying the position in my heart inch by inch. Until one day, the doctor pointed to the position of my chest and said that the load there was too heavy. If it was not cleaned up in time, my life would be in danger. I was so worried that I couldn't eat, and I thought of ways to clean up my heart every day. Finally one day, I opened the door and saw a lush tree. It turned out that it was you who almost killed me. I put my hands around it and tried to pull it out by the roots, but it didn't move at all and the root couldn't be found. I reluctantly gave up and sat under the tree and looked at it in despair. Its trunk was very strange. The lines on it looked like human faces and stories. This reminded me of the countless dark nights.