Transportation from North Railway station to Chongqing Chaotianmen Port.

Question 1:-Where is the exact location of the North Railway station ? we are arrivoing from Xian. We need to find out transportation from Raiway station to Chaotianmen Port. Dis tance to Port Taxi fare? bus and subway details?
Question2:- do you have day city tours in private vehicle. If we can find a day tour driver can pick us from the station around 9 am, and drop us at the Port around 4 pm. Thank You Nima;