I book the flight CZ from HAK to BKK and the flight stop at CAN. If I would like to take some hours outside the airport, go to Liu Rong Si and Guang Xiao Si, is there some procedures like check the health, etc before going out and in again?
How many hours does it takes from after the flight landing to the process of going out of the airport?
Also, how many hours does it take from going in the airport? 2 hours prior the flight departure?

I'm not going to spend the night there at CAN but just go to 2 places, when I leave the luggage and get back later, does it take me so long?

Sorry for many questions but I would like to go visit only 2 places in CAN during the flight stop in CAN. Thanks.