My sister has a habit of cleanliness. Once, my father accidentally sneezed in the bedroom, and my sister fled.
I also found that she never wore sandals because she was afraid of dust on her feet. She never steps on the floor of her house barefoot.
Another time, when I was eating, my hand accidentally touched a piece of vegetable leaf. My sister was furious and said, "why, I won't eat this dish!" at first, I thought what my sister said was just angry words. Later, my sister really didn't eat that dish.
I have no choice but to have a clean sister.