I am flying from Ho Chi Minh to Beijing and then to Paris

Hello,
I am flying from HCM to Beijing, but unfortunately I won't have my resident permit for China anymore by that time.
The thing is that I already have a flight for Paris (booked last year) departing from Beijing (thus the reason why I cannot take a flight HCM-Paris). It is not with the same company.
Can I take a direct flight from HCM to BJ, benefit from the 72h transit visa and then take my flight for Paris?

Thanks, Jenny