赎心卧底
[shú xīn wò dĭ]
In English, 'Shu Xin Wo Di' means something like 'redeeming spy' or more descriptively 'a repentant double-agent within the soul.' It conveys someone acting from within a hidden identity (as with spies/undercover), seeking atonement for wrongdoings - thus 'redeeming oneself.' They pretend allegiance while trying to fix the situation, hinting not just at remorse, subterfuge, but also a journey of redemption internally and/or externally.