The name of the man in the bathrobe was Zhou Yue. If Yao Zhixing had a clear discrimination between love and hate, then Zhou Yue would take offense at the smallest grievances. From a certain perspective, Zhou Yue was no different from Yao Zhixing; they were the kind of people others would not like to have as enemy. However, for Yao Zhixing, it was due to his ability; for Zhou Yue, it was because he was a mad person.
Yao Zhixing would deliver the fatal blow in one shot while it would be endless with Zhou Yue. No one would ever know what they did or said that had offended this guy. In fact, they might not have done anything—if he just did not like their face or they just talked for several seconds too long with someone that he did not like, then they would be added onto his blacklist.