At this moment, within the Tang Family's grand compound.
After the banquet had ended, Tang Ran went straight back from Shuiyue Liuli, entered his study, and shut the door behind him.
In the simple room, devoid of many ornaments, one could see a black cabinet on which there was a vase that appeared to be from an earlier time.
Tang Ran walked over and twisted the vase, revealing a door that moved aside in the black cabinet.
It was a hidden mechanism.
Tang Ran slowly walked in, and just as his figure disappeared, the cabinet closed again as if nothing had ever happened.
Within the mechanism, Tang Ran slowly walked forward, passing through a series of corridors, finally arriving underground.
This underground area was a research facility, also the deepest secret of this large compound.
Inside, one could see many scientists working at tables covered with test tubes filled with variously colored liquids.