What does this sentence mean, "At the age of thirty-six, I changed my blue robe into a red one"?

A flesh-and-blood body is the noblest, and it has long been named Chunmen. When the year will be thirty-six, the blue shirt will be taken off and put on a red robe. Note: I am upright, upright and talented in this life, and I refuse to rest. Six brothers and sisters are powerless, and their ancestors are helpless, starting from scratch. After all, there are many complicated things, and no money can be made. What a good pair of money robbers, they don't make money. This kind of life makes spiders weave webs, and the night is not round. After several failures, they can only steadily start family planning. Unexpectedly, they were blown away by the strong wind, and the initial limit was 234.