人心难测你要百毒不侵
[rén xīn nán cè nĭ yào băi dú bù qīn]
Translated as 'People are hard to read; you must be immune to all toxins', the nickname reflects a cynical perspective on people and interpersonal relationships. The user warns about being cautious or indifferent when dealing with insincere individuals or toxic interactions, advocating a stance where one does not get affected by negative energies.