Yiwu to Shanghai Pudong Air port bu BUS

(1) how to go Yiwu to Shanghai Pudong Air port (by BUS)
(2) how many buses time table from Yiwu ?
(3) if bus time not suite me than how to approach Shanghai South Railway Station to Airport? via MTR etc
but note that we have a luggage so can not walk so much to take 1 place to another MTR/BUS
(4) any cheap hotel in Shanghai South Railway Station (near due to luggage)

please ans one by one to understand
i will grateful to you