An actor entering a painting was an idiom that meant that the person playing the role of an actor entered a painting. This idiom is usually used to describe the professional life of an actor or artist. It means that they are engaged in performing arts for a living and may work in music, dance, painting, and other art-related fields for the rest of their lives. The other idiom meant that one had to wander the world for the rest of their life without a clear goal or destination. This idiom is usually used to describe a person's fate, which is unstable and lacks a sense of belonging. He may need to constantly pursue his dreams and goals, but it is difficult to achieve true success and happiness.