Bi Sheng and Li Liang Cai didn't intend to stay in Sima Clan for very long but Sima You Yue said that she wanted to reply to the letters to everyone in the Valley so they stayed as she needed some time.
As there were some Ancient Stones in her Spirit Pagoda, she pushed back the journey for a few days and extracted some of the Ancient Spirit Beasts in the Spirit Pagoda. After taming them, she fixed up the cages for these Spirit Beasts and looked for an interspatial ring to temporarily keep the Spirit Beasts in and passed it to Bi Sheng.
This kind of Interspatial ring had air inside. It allowed the Spirit Beasts to breathe but it was limited, so she asked Bi Sheng to return to Paramount Valley straightaway.
Both of them who were always calm were astonished when they heard that there were Ancient Spirit Beasts in the interspatial ring.