What kind of person is my grandfather?

My father-in-law has short hair. Seen from a distance, his hair is black. If you look carefully, you can find a few rare white hairs in his black hair. My father-in-law's eyes are not big, and there are several wrinkles around his eyes. When he smiles, his eyes will narrow into a crack. His eyebrows are thick and flat, and his father-in-law has a lot of beards on his chin, which makes him feel prickly. Whenever I see my father-in-law, I always have a kind feeling.

Once, my father-in-law took me home from school. On the way, it suddenly began to rain cats and dogs. My father-in-law blocked me with his body, as if it were my umbrella. We braved the heavy rain to go home together Bean-sized raindrops fell on my father-in-law, and there was a crackling rain in my ear. When I got home, my father-in-law and I became two drowned rats, but my father-in-law asked me to take a bath to warm up first. As for himself, although he was soaked to the skin, he didn't care at all and simply wiped it with a dry towel.

My father-in-law is a little fat, but he is healthy because he loves sports. Rain or shine, he insists on going swimming every day. Once, it was snowing heavily, and my father-in-law still wanted to go swimming as usual, but my mother-in-law was discouraging: "Don't go, it's still snowing outside, and the ground is slippery." I can't help it, but my father-in-law can't talk to her mother-in-law, so I can only stay at home. After a while, the snow became smaller. Before my mother-in-law could speak, he went out for a swim. But don't underestimate my father-in-law. He is a great swimmer. He can swim in the swimming pool for 20 laps at a time, 1000 meters, and it only takes 25 minutes. You think it's great? Grandpa is 70 years old!

My father-in-law is an understanding and athletic person. He is unique and not old at all!