Because even the powerful Divine Demons fell under their assault.
Because of his training in war tactics, even if his heart had expanded, he still did not rashly charge into Shouchun City.
If Yu Jin wished, thirty thousand Tiger Guard Army could carve out a path into Shouchun City in just a moment, but Yu Jin did not know how many Demons and Monsters were inside the city, so he dared not act rashly.
He only dared to slowly whittle down the strength of the Demons and Monsters from the edges; although the Demons and Monsters did not tire, their numbers were ultimately limited, and the Tiger Guard Army's speed of clearing them far exceeded their physical recovery.
One could say that if the situation remained as is, the Tiger Guard Army could completely kill all the Demons and Monsters present in less than an Hour.
But that was an ideal state, and Yu Jin also knew it was unlikely to happen; just now, while killing Demons and Monsters, Yu Jin suddenly thought of a problem.