祝我五毒不侵
[zhù wŏ wŭ dú bù qīn]
The wish for oneself 'Hope I become immune to the five poisons'. In Chinese culture, the five poisons generally refer to bad human traits or vices (greed, hate, delusion, pride, jealousy), so here, this nickname hopes one will stay away from vice and maintain purity and health. Alternatively, it could humorously imply a resilient and indifferent character, akin to being tough and unaffected by troubles.