How to go to Nanchang great wall from Jiangxi university of tcm wanli?

Well, there is no direct public bus. You need to transfer. Take bus no.222 to Dingfeng Zhongyang Station and bus no.708 to Yingshang Intersection. Then transfer to no.143, get off at Qiaoling Station. After arriving, you can hire a private car to get to the scenic area.
Or from the university, you can also take a taxi to the destination directly. The fare is about CNY 120 to 130 in general.

Does the wall start at Quailing Station? If no, how long will it be until the wall? and how much does a taxi cost from there?
Thanks!

No, the wall is about 2.5 miles (4 km) away from Qiaoling bus stop. The taxi fare may be CNY10-15. It takes about 10 minutes.

Dear Alex thanks for the quick reply.
So how long do you think that the whole travel from the train station until the wall will take? Have you been there?
So at Jiangxi university the bus 222 to dinging zhongyang and then bus 708 to yingshang intersection and there a taxi? Are there always taxi's and to go back.
Apologies for my many questions.

Do you refer to the Main Railway Station by "train station"? If yes, you may take bus line 232 from Railway Station West Station to Yingshang Intersection. Then, change to bus line 143 to Qiaoling Station. After that, take a taxi to the wall for CNY10-15. The distance is about 21 miles (34km). The trip takes about 1.5 hours.

I am sorry that bus line 222 doesn't lead to Dingfeng Zhongyang Station nowadays.
Do you live at the new campus? If yes, you may take bus line 170 to Qianhu Yingbinguan Station. Next, change to bus line 512 to Honggutan Peitao Zhongxin Station. Then, transfer to bus line 143 to Qiaoling Station. Afterwards, take a taxi to the wall. The distance is about 26 miles (42km). The trip takes about 2 hours.

Yes, you can find taxis back. Or, you can take a taxi to the wall directly. The fare is CNY 120 to 130 for the single trip.