Loop
The king is showing his people how to put a net around a weird zombie by walking around it in a loop. It's a weird zombie because it has the ground on top of its head instead of dirt.
Watch as the king loops the net around and around and around the zombie, keeping it completely pinned down.
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The king also explains that this loop technique was used by Genghis Khan (かん) when he was conquering cities. He'd loop around the entire place with a net and trap them.
Picture Genghis Khan looping around and around just like the king is looping around and around this zombie.