Which poem comes from "The mountains and rivers are empty and melancholy, and this life is already at a loss"

This is what Hu Lancheng wrote to Zhang Ailing after she and Zhang Ailing broke up

The man regretted it so much that he could never get it again. He could only sigh:

When I woke up from the dream, I was in Wangchuan, standing next to the Sansheng Stone that belonged to me. There was only Ailing's name on the Sansheng Stone, but I couldn't see you Ailing. Where, it turns out that this life has been lost, the mountains and rivers are empty and melancholy, and I will be waiting for you in the end.

The meaning is nothing more than that after losing you, I have no intention of living in this life, leaving me only melancholy