The Yin Heart Puppets
Before coming to the Rust Sky world, Ziran had studied the geography of the world as well as any other information he might need.
He had been an explorer for thousands of years and knew that such information was absolutely necessary when one went to a new place. If one already knew about the place, they would know what to watch out for as well was what dangers lay there.
It wouldn't matter what kind of dangers they were either, whether they be geological, animal or political in nature. All sorts could be managed as long as one was aware about them and could think about solutions to them.
As such, one of the basic things that Ziran had studied was the dangerous areas of the Rust Sky World, the forbidden lands.