Walking is good exercise. I am in the habit of taking a walk after. supper each day. Every day right after supper I walk around the school campus, I especially like the children's corner, where dozens of two or three year olds are playing, laughing and chasing each other. They are like colorful flowers dotting the green lawn. One afternoon as I was walking in front of the library, beside the lawn, the mother of a two-year-old boy named Chen Ran nodded friendly and greeted me by saying "Walking?" I answered with a smile, "Yes." The child immediately immitated, "walking" and repeated it several times. To each of his utterance I answered with a laughing "Yes."