If you have to go down, take Suzhou and G42 to Shanghai. Go straight from G42 to Wuning Road. Go straight to Zhongshan North Road and turn right, then go straight ahead. Go straight along Zhongshan North Road, and the name of the road will change (Zhongshan North Road-Zhongshan West Road-Zhongshan South Second Road is actually the road below the inner ring elevated). Take the pedestrian passage in nanpu bridge, go to Longyang Road after crossing nanpu bridge, and drive along Longyang Road to the Expo Center. (Actually, it's the same as sitting on the inner ring viaduct.
If you are familiar with Shanghai and want to take a straight line, that is, G42 will come out and go straight along Wuning Road, turn right at Cao Yang Road, go straight along Cao Yang Road, enter Jiangsu Road, go straight into Huashan Road, go straight to Xujiahui Road, turn into Zhaojiabin Road, go straight to Zhaojiabin Road, enter Xujiahui Road, and go straight into Lujiabin Road, which is nanpu bridge. You will see Longyang Road in the past.
The above two routes go straight as far as possible, without turning any corner, and you can't go wrong.
Summary route 1:G42- Wuning Road, go straight-Zhongshan North Road, turn right-go straight to Zhongshan West Road, go straight to Zhongshan South Second Road, go straight to nanpu bridge and cross the bridge.
Route 2: G42- Wuning Road-Cao Yang Road turn right and go straight to Cao Yang Road (the road name is changed to Cao Yang Road-Jiangsu Road-Huashan Road). Turn left at Xujiahui intersection and go straight to nanpu bridge (the road name is changed to Zhaojiabin Road-Xujiahui Road-Lujiabin Road-nanpu bridge-Longyang Road in turn).