My Chinese lady want me to come to her in China. please what type of visa do I need?

Elivis, since you both aren't married, you can apply for F type. Actually, L type is good. But it seems that Chinese embassy doesn't issue it to Ghanians. You need to submit your passport, application form, a passport photo, introduction letter from your employer, invitation letter issued by duly authorized unit in China, personal bank statement or pay slips in last four months (original and copy) and flight booking and hotel reservations.