It turned out the old beggar guarding the seventh gate had a standard tactic: releasing a hallucinogenic nerve agent into the air. After Zhao Rong's group entered, the old beggar wanted to confirm they had succumbed to the gas, so he used his smelly old leather shoes, a hairdryer, and a power bank to test their reactions. If the test confirmed they were poisoned, he wouldn't need to proceed to his second step, as the first was lethal enough to kill them.
