CF Terminator Mode Biochemical Hotel: How to Fall into BUG? Need specific location and operation steps. Thank you.

The simplest bug is the corner of the green lawn in the basement of the hotel. You press WS alternately, and then get stuck in the middle of your body after two or three times. Then you go to the billboard in the hotel and squat down. Don't look at the underground blueprint, just look at the white edge, and look at the blue and it will bleed. There is another place, on the other side of the yellow and blue slide. Look at the corner, or press WS alternately, and it will slide down immediately. Then press W, and squat down. Just squat down. If the ghost can't catch you, don't look at anything.