It means that this life is a life of nobility and good fortune. You can enter the government very early and become famous (i.e. "surname mark"). When you are thirty-six years old, you can get a small position (i.e. "Blue shirt", the blue uniform of the old public servants) was promoted to a senior position (i.e. "red robe").
The blue shirt takes off the red robe. The blue shirt and red robe are symbols of official status in ancient times and a sign of adding officials to the government.
This poem is in line with the numerology: he is a wealthy person, and according to the meaning of the word, he should be an official, which is the so-called "entering the spring gate".
Extended information
The "Book of Changes" believes that everything in the world is in a state of never-ending development, and it explains this "natural" law. This law is called "road". This law reveals the characteristics of the entire universe and encompasses the attributes of all things in heaven and earth.
The development of everything has "fixes" and "variables". There are rules to follow for the fixes, but there are no rules for the variables. There are variables in the fixes, and there are fixes in the variables. Regardless of the fixes or the variables, the overall situation All unchanged.