If your office building was built before 2004, your placement is very correct, which also proves that you are lucky to have such an idea. Your office is located in the fourth, eighth and eighth houses, which is the most popular place at present, so I suggest you put the bookcase behind your back as a backer, and the employees in Northeast China are basically right.
There are indeed many mirrors, so it is recommended to get rid of them. Either set up a porch at the door or put a plate of rich trees.