There Are Trees in the Strange Mountain

The story of Liu Xi, a primary school teacher, and Lin Mu, the ranger of Guishan Mountain, had an intersection as early as the first time she and her boyfriend went to Guishan Mountain, but they forgot about each other for a long time. After her boyfriend died unexpectedly, she was summoned by the mountain and interacted with him again. There is a certain connection between Kuishan and her. How will Kuishan control her destiny?