Generally speaking, if you want to apply for Tourist Visa for family visit, you should have relatives living in China and you can provide Relationship Certificate, such as Marriage License, Birth certifictae, however, you just have friends in Nanchang, you can't provide the Relationship Certificate, I can only say that provide the Invitation Letter and her Id card copy (if she is Chinese)to have a try, if she is foreign, she needs to send you an invitation letter together with the copy of her passport and Chinese residence permit.

If she send me all required documents like invitation letter , I.d card copy and Passport copy so can I have visa easily . remember she is chinese not Pakistani . . .

Mr.Taiha Jamai, ni one here can ensure you will be granted a visa even you got from her an invitation letter and passport copy. what I have to say is it is all up to the visa officers who will make the final decision. In my opinion, you may better join a group for 5 persons, and apply for a group tourist visa by providing an invitation letter from a China Travel Agency(https://www.travelchinaguide.com/) and an detail travel itinerary, it is much easier.