死勁
[sĭ jìng]
The term '死勁' can be interpreted as putting all one's strength or effort into something, equivalent to the English expressions 'going all out' or 'trying one's hardest'. It conveys a sense of dedicating oneself entirely and persistently to achieving a goal or overcoming difficulties. Such a nickname might be used by someone who is determined, ambitious, or known for their perseverance.