Write a poem for my father on the steps.

I carried a load of water and climbed the third step easily. But when I reached the fourth step, the bamboo pole was shocked and let out a scream. My body shook and water spilled on the ground. I thought: I used to pick a few buckets of water and I wouldn't spill it on the ground. What happened to me today? Why did I only spill two buckets of water? Am I old? No, I'm not old, I'm still strong! Thinking about it, I have entered the kitchen. The moment I put down the bamboo pole, my waist flashed somehow. I endured the severe pain and asked my wife to help me cure it. During the treatment, I thought: am I really old? I can't even lift a pole, and my bones are soft again! Can't you do heavy work in the future? Can't you earn money to support your family in the future? I don't want to live at home yet, I don't want to be a burden to my family!