YVR-PEK

Hi, I am arriving from Vancouver, Canada to Beijing at 4:30 pm on Mar.19 I will then have a flight out of Beijing to HKG (hong kong) at 8:30pm Mar. 19, I will then return to PEK (Beijing) on Mar.30 6:00 pm stay until April 2 4:00pm and will depart back to YVR (Vancouver), will I need a visa. I hold a canadian passport.