Transit Visa Flying Through China

Hello everyone,
Here is my flight itinerary:
I am from Afghanistan and currently I am Permanent Resident in Canada Do I need a transit Visa?

China Eastern Airlines
Flight 208
3:25pm Wed Dec 6 Toronto (YYZ)
7:20pm Thu Dec 7 Shanghai (PVG)

Layover: PVG, Shanghai, China, 18h 20m

China Eastern Airlines
Flight 231
1:40pm Fri Dec 8 Shanghai (PVG)
7:00pm Fri Dec 8 Colombo (CMB)

Trip Time (w/ layovers): 41h 5m 1 stops

China Eastern Airlines
Flight 232
8:20pm Sun Jan 7 Colombo (CMB)
5:55am Mon Jan 8 Shanghai (PVG)

Layover: PVG, Shanghai, China, 6h 10m

China Eastern Airlines
Flight 207
12:05pm Mon Jan 8 Shanghai (PVG)
1:25pm Mon Jan 8 Toronto (YYZ)