If the mine entrance is indeed covered by the Spiritual World, it's a situation that wouldn't be surprising. Moreover, even without the interference of Psychic Power, making such high-level protection for Hua City's major financial source is quite normal.
Simply put, not to mention taking a stroll inside, even approaching it is impossible unless you have legitimate credentials.
Xu Huo took out the Hypnosis Beginner's Guide he had bought a few days ago and conducted practical operations on He Pu.
With Psychic Power assistance, hypnotizing someone isn't difficult, but the final effect depends on the operator's skill. Guiding the hypnotized person's behavior without conflicting with their own nature is quite challenging. So he merely planted a small suggestion: make some more money recently.
After completing all this, he left the hotel and returned to Brother Song's place.