What does it mean to enter Chunmen early with your surname?

Be able to enter the government early and make a name for yourself.

This sentence is a fortune-telling judgment, which is used to describe and predict a person's fate. "Early entry into the Spring Gate" means early entry into the government and early appointment as an official. The "surname standard" means that this person's surname will be famous in officialdom and widely recognized and respected. The last sentence of the whole sentence "at the age of thirty-six, I took off my blue shirt and put on a red robe", which means that this person will be promoted at the age of thirty-six, and he will become a senior official from a civilian status. Generally speaking, this sentence means that a person has a bright future, a prominent position and the potential and opportunity to be an official.