The vibration of the feather was distinctly visible, and as soon as Long Jiu felt it, he immediately frowned and cautiously looked around.
This feather was the essential item for him to contact the Phoenix Demon Clan. Only through it could he bypass all barriers to communicate with them.
Generally speaking, communication with the Phoenix Demon Clan was one-way; they would never take the initiative to contact him.
After all, if the feather vibrated at an inopportune moment, the Old Dragon King would definitely notice.
But now, the feather was vibrating on its own, indicating a major event on the Phoenix Demon's side that he needed to know.
Long Jiu thought for a moment, then activated the special energy within the feather.
The instant he activated the feather's special energy, an invisible barrier expanded from the feather, enveloping Long Jiu within it, so that the outside world couldn't hear or see what was happening around him.
