Shouldn't

Lady Shi'er gasped and looked at the small Wind-Stepping Tiger in her arms with more heart ache. "How did that happen?"

Hua Shuangshuang paused and was hesitant with his words. After a moment, he didn't directly answer her question and said, "Perhaps it met with some accident. I saw that it was still young, so I brought it back."

It had always been very easy for him to be close with all kinds of fiends, and he had raised many of them over the years, so Lady Shi'er and the rest didn't pay more attention to it.

However, Chu Liuyue took another look at that Wind-Stepping Tiger in deep thought. This is clearly a fiend of Fantasy Divine Palace. If I haven't recalled wrongly, all the fiends here are raised on that fiend mountain, and Second Deity is in charge of it. Of course, the fiend mountain is completely open, and anybody can go, but they can't casually take fiends away—unless the cultivator has formed an agreement with the fiend.