There was a total of four channels between Tianding Realm and the Human Race's 36 Great Cosmoses. When the Human Race's Divine Ancestor had appeared, these four channels had basically opened.
However, due to the overwhelming strength of Tianding Realm, not many people from the 36 Great Cosmoses entered Tianding Realm, even though many people from Tianding Realm visited the 36 Great Cosmoses.
After all, who would be willing to tolerate the arrogant attitude of the people from Tianding Realm?
Ever since Luo Yunyang had led the five sacred halls to implement stricter control over those who acted recklessly, the number of people coming to the 36 Great Cosmoses from Tianding Realm had dropped as well.
The two sides of the channels were guarded by people dispatched by Tianding Realm and the 36 Great Cosmoses respectively. The guards of the two sides didn't get along either.