C1901 A Resurgence of the Undead Ore

Taking down a city, only one Bone Three was able to grow into a Blue Flame Undead, which showed how difficult it was to grow.

"Lord, if you want to increase the strength of your servants, the other two cities will directly send a few Bluefire Undead to attack. Gu Yi and I will be in charge of holding the line."

After Gu San became a Blue Flame Undead