Hello, please I need information about the cost of flight from Abuja Nigeria to Shenyang jianzhu,

Do you refer to SY Jianzhu University?
If yes, there is no direct flight between these two places. You need to transfer flights at Dubai first and then Beijing. After arriving at Beijing International Airport, take a plane to SY airport.
Ticket fare cannot be estimated exactly because it changes frequently with seasons. But in normal time, it costs about CNY 6200 for the single trip.

When you arrived at SY, just take a taxi to the university. The cab fare is CNY 50 to 60.

Ok thank you,but how about the clothing? I learnt that d weather there is cold, is cheap to buy jackets and other clothes there. please reply if you have any idea.

You can bring some clothes for usage on early arrival days. When you have time, you can go shopping in local stores with your classmates. In the case, you can be with the local fashion. The price varies a lot. There are both expensive brand ones in large deaprtment stores and cheap ones in small stores by road side. You can shoose based on your budget.