This is an extremely exaggerated degree; if spread, it would shock the world. Fortunately, the new batch of disciples from the True Martial Sect have never left the mountain.
In reality.
It's not just the Body Tempering Realm.
After Ning Qi completed the existing realms, he summarized and, combined with his cultivation experience, created many universally applicable Secret Techniques that could simplify the cultivation in the Inner Essence and Gang Essence Realm. The most direct example is that when Jiang Baishan descended the mountain, he was already nearing the Jade Liquid Realm.
"Back then, I completed the Body Tempering Realm in three years, an unprecedented speed. But if the cultivation Dharma Methods I've created are spread, I wouldn't be surprised to see some prodigies far outpace my efforts. Will those future generations think little of me then?"
Ning Qi smiled faintly.