Regarding why Emperor Wu'an was on good terms with the Eastern Continent's Ghost King.
There were really too many versions sent back by the secret guards.
Some conspiracy theories said that Emperor Wu'an and the Yuan King were on good terms because they wanted to rebel and do something unfavorable to the East Continent.
Some said that Emperor Wu'an had a strange illness and was treating it in the Yuan Mansion.
The version sent back today was definitely the strangest one Yun Ran had ever heard.
To summarize, it was "The Two and Three Things that Emperor Wu'an and the Yuan King Had to Say", also known as "The Unrecognized Love and Hate of Emperor Wu'an and the Yuan King".
They made it up to be exciting.
It was said that Emperor Wu'an's harem was empty and that the Yuan King had not had a woman all these years because they were waiting for each other.