What does it mean to wear a yellow robe for fortune telling?

The stalk came from a short video taken by a takeaway brother from a US group. The video content is that the younger brother said to the camera: When I was eight years old, I met a fortune teller. The fortune-teller said that when I was 24, I would wear a yellow robe and eat big fish and meat. I believe you are a ghost, you bad old man. In this video, my younger brother is very angry, but judging from his real life, it is really a yellow robe (the clothes taken out by the US delegation are yellow). There are fish every day, no problem. That's hilarious.

It seems that the fortune teller's words are not completely wrong, and the delivery salary is not low. As long as you work hard, you will be the best.