TRONTO TO XIAN, TRANSIT CHANGE AIRLINE IN BEJING

if I travel from Toronto(holding Canadian passport) to Xian via BeJing airport(connecting flight from BeJing airport(Air Canada airlines to Eastern China airlines )to Xian wintin 5 hours) and then stay at Xian from Dec 26 11:00pm and leave on Dec 29 11:am. Do I need China visa?