C334 Sibling and Sibling Guard(part I)

On the tenth floor of the Grey's Chamber of Commerce, there were many rooms on every floor. Reception rooms, lounge rooms, secret rooms, etc. The main business of the first level was construction, which meant that the pattern was the head of the Herculean Cow; the second level was wine, which meant that the pattern was two Yellow Hair Flood Dragon; the third level was a new weapon