What does it mean to dream of living with my dead grandmother?

Duke Zhou said that he dreamed of his dead relatives and lived a happy life for a long time.

I think your grandmother is protecting you.

About sleeping on the concrete floor, is there a sun?

There are several in The Duke of Zhou, which one suits you:

Dream of sleeping in the yard-you will become strong and live longer.

Dream of sleeping in the hot sun-you will get into trouble, but you will succeed in the end.

Sleep and dream-very tired, pay attention to supplement nutrition and rest more.