锁眼
[suŏ yăn]
A literal translation is 'Lock-Eye', seemingly odd for a nickname but possibly alludes to focus or concentration. In ancient Chinese, a lock is also seen as protection, guarding something or someone. Hence, selecting this peculiar term might reveal a hidden meaning: keen observance and careful protection of significant persons or matters, signifying vigilance and attentiveness in specific scenarios, particularly regarding precious or treasured objects.