倚剑走天涯
[yĭ jiàn zŏu tiān yá]
This name '倚剑走天涯' (yi jian zou tian ya) means roughly 'To wander afar relying on one's sword'. Such usernames typically come from the influence of martial arts novels where characters are itinerant knights or heroes living carefree lives while depending heavily on personal strength and courage in swordsmanship.