The 'loss' that Feng Bujue meant was naturally not the loss of the battle, but the failure of the side quest…
At the moment the Silkworm Mother gave her last echo attack, there was another sound that rang out. But at the time the players' ears were under great pressure and it was impossible to go and mind other smaller noises… Only Brother Jue… barely captured something in the background. As a person who was used to juggling many things at the same time, he would not let go of any details. In that dangerous moment, he almost instinctually opened the game menu… and realized the reality that Uncle Worthless was already dead.
Indeed, the sound that was covered by the Silkworm Mother's roar should be the system announcement, "Team member, Uncle Worthless is dead."