Stop over in Guangzhou prior to going to Beijing (72 hour visa free transit)

Hi all,

I am British passport holder. I am planning on travelling from Australia to Beijing. The flight has a stop-over in Guangzhou (but I am not getting out of the airport), and then I fly onwards to Beijing. In Beijing I intend to use the 72 hour free transit to quickly explore the city. Does the fact that my flight stops at Guangzhou (although I will not leave the airport, but may have to switch planes) affect my eligibility for the 72 hour free transit at Beijing?

Many thanks