천조국

It doesn't mean "celestial" place as the other definition said. U.S. is called 천조국 bc their their national budget is almost about 천조(quadrillion₩). (Which is about $83,000,000,000 in US dollar)

"천조국's national budget actually isn't $83,000,000,000. It's actually about $58,100,000,000."

by cantbuymelove6969 January 06, 2017