i want to go from Yalong internation hotel in Shanghai to Tianchang City

Do you mean the Tianchang City in Anhui Province?
If so, you had better to go to take the cab from the Shanghai Zhongshan Bus Terminal near the Shanghai Railway Station. From your hotel, you can take a taxi to reach Yunshanlu Station of the subway line 6 and then take the subway to reach Central Avenue. Transfer to line 2 and reach the People's Square to transfer. Take the subway line 1 to reach Zhongshanbeilu Station and then get out of the station from the Exit 4 and you will see the station.