Luggage question: I'm going to Beijing from Kiev.

Hello, I'm planning to stay in capital airport for 10 hours in transit. I don't want to leave the airport as I'm heading to Thailand soon after arrival to BJ.
I'm using 2 different airlines. So these flights are not corresponded. The question is : 1)Can I grab my luggage in the airport and register it for the next flight not getting a stamp that I entered a country? 2) can I not take my luggage and leave it in the airport for 5 days until I come back to BJ from Thailand?