skill stones.Lu Kong raised an eyebrow. A heavy strike was a basic skill, wasn't it He didn't expect it to require a primary skill stone to upgrade.That's ridiculous.There are still quite a few skills..."Fang Nan immediately glanced at his teammates and said, "Xia Ka, come in with me, the rest of you stay here."A number of team members nodded, then Fang Nan and one scout quickly ran deep into the Fro...