Toward the west and toward the east: you are holding a view of your work, you may want to stay in your original unit at one time, and at a second time you want to be transferred to another unit, and you are often uncertain about whether you can move forward or not. Pedestrians laugh at you: even when they see you like this, they can't help but laugh at you
Can be an old man: you need to be far-sighted in your work, and have a long-term plan, in order to be stable and worry-free. I'm worried about being transferred to another job, but I don't know what to do in order to stay in my current job. The sign warns the person to have a long term plan for his job, which is the most important part of his life plan, in order to stay stable in his job.