I am a Canadian passport holder. I want to go to Beijing for less than 72 hours. Can I get this visa

Maruf, if you want to avail yourself of this free transit scheme, you can choose an eligible route, ie., fly from a country to Beijing and then to another country or region before going back. If you choose the route from a country to Beijing and back to the same country directly, you are not eligible for the 72h free transit.

Thanks a lot Steve. Maruf