不知悔改
[bù zhī huĭ găi]
The term '不知悔改' (bù zhī huǐ gǎi) in Chinese means someone who does not know how to change for the better or refuses to regret and reform their behavior. This internet name can be interpreted as conveying defiance or a certain level of rebelliousness, perhaps even used humorously by individuals to reflect a trait or past actions that they may or may not be genuinely unrepentant about.