Post horse in the eight characters? Work has always been unstable!

Among the eight characters, there are too many Ma Xin, especially Yue Ling, who is a horse star. He has a lot of business trips in his life, including traveling, and he has a strong ability to travel. And the job has been unstable, depending on whether there is a post-horse rush. If there is a fourth rush, the job is really unstable, including regional occupations.