Tiger Subdue Sect was also an expert in soul spirit attacks. They deeply knew how horrifying such attacks could be. Not only was the killing speed fast, but these attacks could also kill a group of people without a trace, without any visible wounds on the enemy.
Cao Shishui also came to the same understanding. If these people were really killed one by one using awls, many of their bodies would also be smashed, with their limbs crushed apart. However, even though so many people had died, all of them had their brains smashed out; there were no other visible wounds on their bodies. Hence, the only explanation was that these people were killed first and then had their brains smashed to bits.
"This person is very smart!"