Excuse me, where do I get off from Shanghai to Shanghai-Nanjing Expressway in Yangzhong?

The driving route to Yangzhong City, Zhenjiang City, Jiangsu Province is 239 kilometers-about 2 hours and 55 minutes. Shanghai 1. From Wang Ting Road to the southeast, take Huaihai Middle Road for 54 meters. 2. Turn left at Huaihai Middle Road for 420 meters. 3. Turn left at Tibet South Road for 372 meters. 4. Continue to drive along Tibet Middle Road for 29 meters. 5. Turn left on Yan 'an East Road for 38 meters. 6. Go up the ramp and take Yan 'an Elevated Road 1 1.9 km. 7. Continue along A9 Highway for 424 meters. 8. Take A20 Expressway 6 1 m 9. At the intersection, continue to the right in the direction of A20 Expressway, and take A20 Expressway for 7.5km 10. Shanghai-Nanjing Expressway A 1 1 Exit and take Shanghai-Nanjing Expressway177m1. Continue to turn right at the intersection. Take Shanghai-Nanjing Expressway 4 1m 12. Continue to turn left at the intersection towards Shanghai-Nanjing Expressway. Take the toll section of Shanghai-Nanjing Expressway 178km 13. Take the exit of Luosiwan/Meng He/Jintan, and take the exit of Shanghai-Nanjing Expressway toll section for 0.9km 14. Turn left at provincial highway 239/provincial highway 239 1 1. 1 km 15. Turn right at provincial highway 338/provincial highway 338 1.4 km 16. Turn sharply to the left at provincial highway 238/provincial highway 238 13.9 km 17. Turn right slightly and continue along provincial highway 238/provincial highway 238 10.9 km 18. Yangzhong City, Zhenjiang City, Jiangsu Province 1.4 km turn left.