Simplicity
Keeping at a bamboo interval is the definition of simplicity.
Just one bamboo wide, over and over. That is simplicity.
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Simplicity is what Genghis Khan (かん) always demanded. Everything he decided was based on simplicity.
Simplicity is how he took over so much of the world. If he didn't stick to simplicity, there's no way he'd have been able to do what he did.