Kui Kui and Miao Miao are kissing 2

I took my Kui Kui and Miao Miao kissing video again.
This time more zoom in, but of course still unclear.
But I found that they usually play the finger, 
bite on each other's finger and little kiss the nose only.
Kui Kui and Miao Miao is the most difficult to took their kissing video, 
but this time they seems like too enjoy and can't realise me.