I am a tourist and i have a firm hotel. Who should give me an invitation letter?

If you come to China as a tourist, you need to get an invitation letter from one of the travel agencies authorized by Chinese authority.

This is isaac from Ghana i have got invitation from my business patners in China what should i do thanks

Are you applying for a tourist visa too? If so, you should get an invitation letter from an authorized Chinese travel agency, not your business partner.

If you are applying for a Business visa, the invitation letter should be "Invitation Letter of Duly Authorized Unit" or "Confirmation Letter of Invitation", again not issued by your business partner.