On UK passport, I might exit Guandong (12hrs) and Beijing (to get baggage) - is 72 hour visa ok?

I have a UK passport and have a ticket from Manila to Beijing and another ticket from PEK to MUC (my final destination). The Manila-Beijing ticket might require a stop-over in Guandong (for up to 12 hours) although the final destination in Beijing. I will have exit Beijing airport to collect my check-in baggage but will proceed immediately on that same day to take my onward flight to Munich. In other words, I might exit China from two airports (one in Guandong for a possible overnight stay) and the other in Beijing, just to collect my luggage. Will the 72-hour free transit be sufficient for this journey?