The Evil Rat in the Mirror

The mirror doesn't just reflect your face, it reflects your sins. When Li Mo woke up, there was a red number on his arm: 0. He didn't remember who got the tattoo, he only remembered a mirror and a letter. The letter reads: "Being sensible is a lamb to the slaughter." The cries in the forest were getting closer. The numbers change from red to black. He must find the mirror, he must get out of here, and before his mind collapses—— See the rules clearly.