Nangong Liuyun currently has Elementary 6 for both Spirit/Phisical.
Basically, think of it like when you upgrade your spirit you can also upgrade your body. Its possible to only upgrade your spirit if you are being lazy and not regularly training your body, but I don't think it's possible to just train your body.
Also: 'Elementary' is just the name people give to the level you begin in once you are a martial artist/mage. As people in the continent they begin in are very, very rarely above Elementary, the name is not commonly used as it's the assumed default.