Zhongguo, the Middle Kingdom, is incalcuably old.
The Great Ruan, from which the people the locals insist on calling 'westerners' despite directions such as east and west being meaningless off-world, may not have ruled for the full ten thousand years just yet, but its rising to the Dragon Throne (Ten Thousand Years to the Lord of Ten Thousand Years!) predates human civilization.
Their predecessors were ruling an empire that spanned thousands of systems and was already thousands of years old when most of humanity was still painting buffalo on cave walls and wondering if maybe those Sumerians were really onto something with this agricultural nonsens, and was much the same as it is now.
Lured on by the promises of late pre-ftl era science fiction, much of humanity pursues dreams of adventure and advancement and the promise of escaping the bounds of mortality itself.
Tianxia pursued a ruthless perfect order, then pursued spreading that perfect order to everyone within reach. Humanity is fractitious and argumentative. Rudan is, at least officially, an eternity of hands rowing the ships of state in one direction, with every one of those hands directed by an eternity of wills by the single will around which the universe has ordered itself.
That purpose? That tomorrow will be today. Forever. There will be no dreams of the future. There will be no hopes of better living through technology. This world, these worlds, are enough. If they want to go, then let them go, and good riddance. When the universe crumbles to ashes, when the stars burn out, when life itself sputters and dies in the dwindling embers of eternity?
Who cares? That is the way of things. We will put down our tools and await our grading in the final examinations.
Even the sudden and violent shock of the impossible, of near-peer (officially) star empires rising from nothingness and attacking Rudan itself for the crimes of an over-zealous (and irresponsible) customs collector, has changed little more than the superficialities, at least for the time being.
The Middle Kingdom is old. Ages old. It did not get that way through foolishness. It got that way through savagery, a ruthlessness so innate to the character of its people that they don't even recognize it as such, calling it expediency.
The forest is dark and full of horrors.
Burn it down. Burn it to ashes. Let the cleansing fire of perdition itself destroy those horrors. Build farms and gardens atop the ruins, and walls to protect them, and set a watch upon the walls.
Then? You have all these matches. Find more forests to burn.