Turkish passport holders wishing to explore Shanghai

Well, nobody but a Chinese immigration authorities can precisely answer to your question. However, since your layover belongs to the category of long ones, I would say that your chances to be allowed to exit the airport are really very good.

In order to be allowed to exit the airport you will do the following. Immediately upon your landing in Shanghai you will approach 24/144 hour visa free transit counter. There you will apply for a temporary entry permit by presenting your flight tickets. This application is free of any charge. After a short check and decision making, you will be, hopefully, granted a permit and you will then proceed to the immigration to exit the airport and to enjoy the city on your own. I wish you the best of luck in this regard.