I can’t remember what they had but they had an arrangement about something
The Tang and Song rulers supported a new form of Confucianism called neo-Confucianism.
Explanation
Confucianist ideologies were popular in China from the period of Han dynasty itself. It was developed by Confucius in 551-479 BC. The influences of Taoist and Buddhist ideologies were strong during the reign of Tang and song rulers.
The Confucian scholars then integrated the elements of Taoism and Buddhism into a single ideology which came to be known as neo-Confucianism that gained the approval of the rulers.
Another dynasty freedom was never allowed
The Netherlands.
Reason: New York was originally named "New Amsterdam" when the Dutch arrived to the U.S. However, all of it changed when the British took control and named the state "New York" (named after the Duke of York).