Su Yu sank into thought again. As a central acupoint, there should be a way for him to exert more control over the subsidiary acupoints. Or to be precise, there should be a way to figure out the identities of the passengers inside.0

Was this how it worked during the ancient past? Or perhaps this was a system where a big shot could bring nine subordinates along into the mansion? Perhaps that was the case.0

"Why does the mansion open only once every ten years?" 0

Before long, Su Yu recalled something, "Ten years. One tide. A round of circulation."0

Understanding dawned on Su Yu.0

Yes. For super experts, ten years would end in an instant. That was perhaps only enough time to complete a single circulation of their cultivation method. That was why all these tunnels would open once every ten years.0

It wasn't that they couldn't open normally. Rather, the mansion lacked a source of energy due to a lack of maintenance. Thus, the tunnels would operate in their most natural state, opening upon completing an entire circulation.0

"In that case, there is no hard limit on the opening of the tunnels. Instead, it's a matter of sufficient energy. A powerful force is also required to materialize the special entrance..."0

In short, if one were strong...0