Underground Kingdom
After retiring, Old Wang's greatest pleasure was taking an evening stroll in the community garden. He always felt that the ground beneath his feet was a bit strange; not soft, but rather hollow. He tried stamping on it, to confirm he wasn't just seeing things.
Old Wang lived on the first floor and had suffered from dampness for years. He mused that it would be great if he had a basement. This thought, like weeds growing wildly in a corner, spread in his mind each day.