为什么在返回指向本地静态变量的指针时此程序会出现段错误？

This is related to an earlier question of mine. I tried expanding the code a little bit and to play around with different ways of returning pointers to local static variables, especially returning two-dimensional arrays. (This is seriously just to understand how pointers to arrays work and how they behave in function environments. It has not even the slightest intent of returning arrays the smart way using of mine.