Chu Chen exchanged the Evolution Formula for the Double-Winged Demon Tiger from the Slaughter Atlas, which cost him a full hundred thousand Slaughter Value.
The evolution direction of the Double-Winged Demon Tiger is the Fire Feather Demon Tiger, with quality reaching Immortal Level Middle Grade, belonging to the fire, darkness, and beast categories.
If the evolution succeeds, it is hoped to reach the Emperor Level in the future.
When Chu Chen listed the evolution materials, even with the two elders' experience, they couldn't help but marvel secretly. These materials are extremely precious, and it might be difficult to gather them in a short time, especially after just experiencing a city defense battle where the Heavenly and Earthly Treasures were depleted.
After all, if defeated, these good things would be wasted by the Star Beasts, so it's better to use them for a slight chance of winning the city defense battle.
