In three months, Shi Yan had killed many people. His achievement wasn't a small number, but it was still much smaller compared to the other five forces.
The warriors he had killed were all at the First Sky of King God Realm. He hadn't killed any Second Sky of King God Realm warriors. Moreover, after each battle, he would disappear for several days, a different habit compared to the other five forces. The other forces would continue their slaughter as if they had never been exhausted.
The achievement contestants could complete in the Extreme Purgatory Field did not only depend on the number they killed but also the realms of the ones they killed.
According to Du Tian Ji's rule, killing a Second Sky of King God Realm expert was equal to killing ten First Sky of King God Realm warriors. Leona's team and Ao Gera's team had killed several Second Sky of King God Realm experts. Their number wasn't something Shi Yan could compete with at the moment.