Infinite Eternal Dream

(Daily, fantasy, single heroine, no system, small opening) What exactly is a dream? In fact, I have been thinking about it until a dream I once had made me feel that I have a deeper understanding of dreams. It has been almost seven years, and I have not forgotten that at the lowest point in my life, that warm hug in the dream seemed to hug her forever and not let go, as if all my failures and despair had been washed away. Although the rainy night was very cold, since then, I have never been able to forget that hug, but now, I have never met her again...