Domestic flight as a connection - can I avoid stamping?

I live in Beijing, but now I am in Israel. I have an Israeli passport with a temporary Chinese working Z which is valid for 30 days from the day of entrance. In addition, I have only one entrance for this visa.

I want to travel to Laos so I book a flight from Tel-aviv (TLV) to Vientiane (VTE). However, I have a connection in China (PEK+KMG):
My flights are: TLV-PEK, PEK-KMG, KMG-VTE.

I want to pass through China only as a international connection, without stamping my one entrance (since I will get in to China after the trip in Laos and stay there). But actually what I have is a domestic flight.

What can I do? Can I exploit the 24 free transit to travel in China (PEK-KMG)? The total amount of time that I have to be in China is less than 10 hours.