Why is Bin County named Erlong Mountain?

Erlong Mountain was once a Feng Shui treasure land. It was rumored that there was a real dragon. One year, a man named Wang from Bin County came to the capital. The decree from above was for construction planning. When Mr. Wang from Bin County arrived at Erlong Mountain, he discovered that it was a piece of Feng Shui. Treasure land. I told a Feng Shui master next to me that Erlong Mountain would have an emperor in the future. When the king heard this, he asked the Feng Shui master to calculate all the vital gates of the mountains in Erlong Mountain. He broke the plan and started construction. The Feng Shui changed that night. The dragon roar came from Erlong Mountain and a five-clawed golden dragon soared into the sky and disappeared like a cloud