n. (婴儿期的)孙子； 孙女； 外孙； 外孙女

Because live besides oneself, the old person can be children, grandbaby commonly people put apart is small smallness space, also have 3 Dai Tongtang's considerations of course. 因为除了自己住，老人一般都会为儿女、孙子孙女们留出小住的空间，当然也有三代同堂的考虑。