I am not vey good at Russian but I can help??
what's the question
This little boy is talking trying to figure out if dragons really exist. He searches for answers, but all he can find are people and scientists that laugh at the idea and say there is no possible way, "The Dragon is to big to fly, We would have found Remaining fossils." The scientists did not believe it was possible or ever will be. The kid keeps researching because of his grandmas words "never give up" So he keeps searching. Eventually he finds papers and stuff in the bible that talk about dragons to say how they can possibly fly and how they can breath fire and the reason there are no bones is because of the acid in the stomach it can possibly burn up and cause the bones to evaporate.
Maybe he didn't find out if Dragons actually exist but he's happy he has his childhood and the night to be happy for.