If one were to say what the biggest difference between the current Bright City and Bright City a hundred years ago is...
It is not the more advanced and powerful city, nor the increased population, wealth, and Spiritual Energy Concentration...
It is the trade network!
This must be discussed starting from ancient transportation methods.
The Treasure Ships that could stably traverse the void to reach the Twelve Dynasties required extremely powerful Artifact Refining Techniques and special materials to be manufactured.
Back then, the entire Cloud Hidden Spirit Sect had no more than two Treasure Ships, which were used in rotation.
People from the Twelve Dynasties who wanted to reach the Upper Sect could only do so when the Treasure Ships came to take them.
Cloud Hidden Spirit Sect held absolute authority over passage, they allowed whoever they wanted, and denied whoever they didn't, leaving others unable to reach Spirit Miao Continent.
