From the moment that shadow appeared, Chen Guan knew what it was.
The deities summoned by the old lady were clearly Secret Spirits.
Chen Guan understood that in the old lady's generation, humans couldn't cultivate directly like now. Instead, they would harness the power of Secret Spirits by offering them gifts, and in return, their physical conditions would be enhanced by the spirits' power.
This cultivation method is entirely different from today's practices.
However, it's evident that the Secret Spirit the old lady worshipped is extremely powerful, most likely a Secret God. This Secret God only attached itself to the old lady, bringing her back to the prime of her middle years under its influence.
The fact that the old lady could live so long is probably due to the Secret God's influence. It's likely that some sort of contract was established between them to allow this.
