C3221 Collect the Kui Cow(4)

There's an unwritten rule in Thousands Treasure Pavilion that every item has a limited amount of time to be displayed. All the guests invited by Thousands Treasure Pavilion were the top of their respective occupations. Time was precious, so Thousands Treasure Pavilion didn't dare to waste their time. All the regular customers knew that unless it was a rare heavenly material. For example