Hi I am traveling from Canada to Mongolia transiting from Beijing.

My connecting flight to Mongolia from BJ is only 2 hours and I have to change terminal as well T3-T2). Do you think I will be able to make the flight within 2 hours? also concerned about my luggage would make on the 2hr flight too?? or it is better for me to book the next day flight? if next day, can i go out immigration in china without visa? ( I have Canadian passport). and check in again for my next day flight in the next day?