Staying Away from People on the Lower Social Rungs
Because you'll be splashed with blood from their possessive reactions to even a little benefit,and the people they contact are all from the lower classes,their vigilance, suspicion, and overreactions will accidentally harm you,once you're slightly better than them,their jealousy will relentlessly use words to belittle you,and try to pull you down to their level,so that their mood can be calmed.
