Introduction to the Royal Palace: The royal palace is always high up. On the one hand, it is for defense, and on the other hand, it also symbolizes the supreme power of the king. However, the war destroyed the castle and the yellow sand drowned the heroes. Looking at the desolation and vicissitudes of the past, a huge country that emerged in the tenth century, performed a splendid historical political drama for seven hundred years, experienced 16 hereditary kings, and had more than 100,000 people, unexpectedly died in Bardock in 1635. In the war of human invasion, they were instantly wiped out. Why did it disappear so suddenly? Why did the hundreds of thousands of people back then disappear without a trace? This is indeed an eternal mystery full of temptations for us.