C177 Developing Mercenary Groups

"You … How can you have so much money? " Even Long Haochen was flabbergasted.

Shi Bin chuckled and said, "Almost everything I have now. After paying the money, I'm basically broke."

A first rank mercenary group needed to pay 100 gold coins to upgrade their mercenary group, but a second rank mercenary group needed to pay 500 gold coins to upgrade their mercenary group