Write an 800-word composition about my grandfather.

My grandfather has a pair of big eyes, a high nose and silvery white hair. He looks very energetic. He always wears old clothes that have been washed white, which is a bit shabby.

Grandpa retired six months ago. Everyone thinks grandpa can enjoy his retirement, but he wants to find another job. Neither mom nor dad agreed. Dad said to grandpa, "Dad, you are old and in poor health. You'd better rest at home. " Grandpa said, "I can't do anything else." I have been working in the Grain Management Institute, and at least I can open a feed shop. " Dad said, "Dad, why do you want to open a feed shop? Hard work and no money. If the money is not enough, the four of us can give it to you. " Grandpa said, "I've worked all my life and I'm used to it. If I have nothing to do, I will be idle. "

At grandpa's insistence, dad reluctantly agreed. Soon, the feed shop opened.

Once, my parents and I went back to my hometown to visit my grandparents. I saw grandpa bending over and struggling to carry three or four packs of feed on a tricycle, and then got on the bus to help people deliver feed. Dad said, "Alas, Dad, you are so tired. Why bother? " Grandpa said airily, "Nothing, I'm not tired." I rushed over and said, "Grandpa, I want to go, too." He smiled and said, "Well, come on, come on up." I got on the bus and watched grandpa hunch his back and stomp around on the tricycle with his feet. I don't know what that feels like. After a while, the car went up the slope of the bridge. The bridge is high and steep. Grandpa couldn't step on it hard, so he had to come down and push it. I also jumped out of the car to help grandpa push. Grandpa and I tried our best to push the car onto the bridge. I saw big beads of sweat running down grandpa's cheek. I quickly said, "Grandpa, have a rest." He said, "No, if you have a rest, when can you deliver it?" I think grandpa's spirit of not being afraid of fatigue and suffering is really worth learning. In the evening, I said to my grandfather, "why don't you rest at home?" Still going to work? " He said seriously, "There is nothing wrong with doing more work. I can not only earn more money, but also exercise. " I said, "Don't you still have a pension? Besides, we can support you and grandma. " Grandpa said, "We don't need your money. We must fight for it ourselves. Besides, labor is also exercise. "

When I got home, I said to my father, "Grandpa is really hard." Dad said: "Grandpa didn't read as many books as we did in his life, and his cultural level was not as high as ours, but the spirit of being willing to endure hardships can never be compared with us."