Jiang Ding's sermon lasted for more than ten years, and then it ended.
During these more than ten years, he offered solutions to the four Nascent Soul Cultivators based on their individual circumstances. All were methods feasible under the current conditions, potentially increasing their likelihood to ascend to Refining Nothingness by one or two percent if their talent and effort were sufficient.
Of course, that's under the cultivation environment of the Upper Realm.
In this Beiyuan Small Realm, it's absolutely impossible, and the chances are very slim in the Medium Thousand World as well.
However, in the Upper Realm, where the Heaven and Earth Rules and Dao presence are more complete, such opportunities increase significantly, showing the importance of external conditions for cultivators.
"...Condense the inner world, birth the rules, and Refining Nothingness begins."