hang4 wan6 jat1 tiu4 lung4 sat1 wan6 jat1 tiu4 cung4行運一條龍，失運一條蟲行运一条龙，失运一条虫

How it's used

This expression uses a vivid contrast between a dragon, symbolizing power and success, and a worm, symbolizing insignificance or failure. It is typically used to describe someone whose fortunes change drastically and unpredictably. The phrase is often used to offer perspective on the volatile nature of luck rather than to insult the person.