But the opportunity for a Golden Core is related to Demon Cultivation.
At the highest point of the Demon Nurturing Forest, there lies an undying Demon Cultivator remain, within which there is a set of Demon Cultivation Technique, directly pointing to the Golden Core Realm.
But this Golden Core is not the same as that Golden Core.
For the Demon Cultivator Golden Core, it's called the Demon Pill, and the Demon Cultivation Technique is also known as the Demon Technique. The cultivator inevitably transforms into a half-human half-demon, rejected by the laws of heaven and earth. No Heterodox Cultivator would want to become a Demon Cultivator just for a technique.
Therefore, Eastern Celestial City transmitted the message to Wen Jiu, not because of the opportunity itself, but because of the Demon Cultivator remain.
