There is a realm outside the six realms called the Thousand Spirit Realm, which is a heresy in this vast world. There is a river in the realm called Yijiang.
After the death of the immortal cultivator Chu Han, he came to the Thousand Spirit Realm at the request of Hades, but he didn't know that what he was crossing was not the vast Yijiang River, but his own spirit.
Conception: