Others might not recognize the Ten-Kill Absolute Formation, but Dao Heng certainly could.
He sent a secret voice transmission to Jiang Chen: "Although this is indeed the Ten-Kill Absolute Formation, it is incomplete. A true Ten-Kill Absolute Formation can only be manifested by harnessing the power of the Heavenly Dao across the ten directions. Even so, incomplete as it is, it remains terrifying."
Upon hearing Dao Heng’s words, Jiang Chen replied through telepathy: "Even if this were the complete version of the Ten-Kill Absolute Formation, I would still step inside. I cannot stand by and watch Chuchu and the others suffer within that formation."
Chapter 2466