江湖生死茫
[jiāng hú shēng sĭ máng]
'江湖生死茫' means 'The blurred line between life and death in the world of rivers and lakes,' which metaphorically refers to the chaotic and unpredictable life in the world of martial arts (jianghu). The jianghu setting usually implies uncertainty and risk of constant fights, where one's survival is always uncertain.