Who saved Liu Meng from evil movies?

Liu Meng and Ding Xin are two college students. In order to explore the superstitious culture in rural areas, they decided to shoot a documentary about fortune telling in Linyi. Wang Po is a famous fortune teller in the village. Whenever someone in the village is possessed by evil spirits, she will be invited to "resurrect" (an exorcism ceremony). With the in-depth communication with Wang Po, they failed to exorcise Li Chen with Wang Po and Uncle Wang. The group tried to leave the villa several times, but it was difficult. The remote valley tests human nature, Li Chen comes back to life, and everyone is running for their lives. Liu Meng and Ding Xin were actually involved in a premeditated incident. When the fog gradually receded, the hidden mysterious tray came out.