A wild bird entering a room isn't a complete sentence; its complete expression is "When a wild bird enters the room, the master must leave," meaning that when a wild bird flies into a house, the homeowner is forced to leave.
Originally, this was an unstandardized ancient spell with the effects of expulsion and cursing. It is rarely used by wizards now due to significant backlash to the user.
However, Zheng Qing, recalling that sentence written in red on the edge of the newspaper, always felt it contained some deeper meaning.
"Doctor, how should this sentence be understood?" The young cost student wrote down the sentence in a notebook and pushed it in front of Xiao Xiao. In this regard, he always had a sense of self-awareness, "That just now, on the edge of the newspaper, someone had written it."
Xiao Xiao glanced at Zheng Qing's sloppy handwriting.