Yes, Su Ya's trump card is the giant tunneling worm below, which has a name completely unfitting its size—Little Blue.
This tunneling worm was a spiritual pet Zhang Xiaoman tamed twenty years ago for executing Guleng Star's underground transportation network plan. Over the years, Zhang Xiaoman has fed it Heavenly Materials and Earthly Treasures, which is why it has grown to its current size.
The windpipe in Su Ya's hand is not merely a simple instrument; its primary function isn't just to play melodies to cast group recovery spells, but to summon and control the tunneling worm, Little Blue.
Just now, Su Ya used this flute to summon Little Blue and had it safely return everyone to the City of Hope.
As long as they return to the City of Hope, even if the world is destroyed, under the protection of the World Tree, they will not be affected.
Moreover, in the worst case, they can retreat into the Original Realm. The survivors of Guleng Star are thus preserved.
