They were both Thunder mystical vines, but Huo yudie's matured ones had already been refined into Thunder mystical pills. As for Kang Zhaoming's immature ones, they were secretly transported away with a few vampire bats after registration.
Although the blood bats were small in size, they were ferocious spiritual beasts that could not be underestimated. Their speed was extremely fast and they were invisible. A few of them could easily take away the Thunder mystical vine. Unless they deliberately slowed down, it was very difficult to detect them, let alone intercept them.
However, although there was a surveillance area in the sky above the West Island, as long as one left this area, there would basically be no West Island disciples to investigate. After all, many Chambers of Commerce relied on spiritual birds for short-distance transportation!