i'm in trouble about transit permit, please help me

i will fly with china eastern from kl malaysia to canada via shanghai pudong, at first no problem but suddenly i recieved an email saying that my flight will delay 1 day from the original flight scedule. So i have to transit in shanghai for about 1 day. My flight will arrive at shanghai pudong on 13th june 16:35 n the connecting flight to kl malaysia is on 14th june 19:25. My question is do i need to apply for a visa? Or is there any other method so that i dont have to apply for it