It means that the brilliance of the mountains and rivers makes people happy and makes tourists forget to return home.
"Qinghui" refers to the brilliance of the landscape, "entertaining people" makes people happy, "憺" is peaceful, Qinghui can entertain people, and the wanderer forgets to return. The lightness of the landscape makes people happy, making them stay in the world. Traveling in the mountains and rivers and forgetting to go back. The clear light can entertain people, but the wandering man forgets to return. The poem comes from Xie Lingyun's "Returning the Jingshe on the Stone Wall to the Lake" in the Southern Song Dynasty.