Be the smartest person in your mind, do things vigorously, get close to the nobles, dress well and get something for nothing. What does this passage mean?

In the vernacular, it shows that you have a bad temper, love to be grumpy and refuse to admit defeat, but you are versatile, and the previous generation left little behind. Family ties are estranged, brothers don't help each other, and relatives can't borrow money. The hardships in the early years and the childbirth in the later years can be seen in the happiness you have worked hard for all your life. I earn all the housework by myself. Financial resources can only be easily obtained after you are 30 years old, and others can help you. We must seize the opportunity and operate cautiously in order to succeed. We may have a serious illness in our life, but the exact year has not yet been determined. Only after the disaster can we be happy. This is what the old saying goes. You can find a dragon and tiger as a spouse and beat two sons. The life span is about 80.