What does it mean that the career line has a branch line extending upward?

Illustration of successively extended career lines!

The successively extending career line is the branch line extending upward in the middle of the wisdom line, which symbolizes the hard environment in the early years, the limited personal development, and the more painful and difficult experiences, but it can cultivate the ability. After middle age, the fortune gradually improved, and with the help of the nobles, he was able to start his own business and develop a world.