What was the inspiration and motivation for this idea, why did you start making this documentary?

While in the filming process, will filmmaker affect the peoples who was being filmed in the documentary? If so, how to try to reduce the impact of them and better working with them?

Did you encounter any problems or risks in filming process and how did you deal with it?

The relation of foreign invader and beautiful landscape, relation of different peoples working together in harsh environment and become like a family , which relationship is the main one of this documentary?

Why there is a long time waiting before the final and largest explosion?