If it were a normal competition without deep animosity, Kong Yu and Shangguan Xiaoyi wouldn't have ended up in a situation where Shangguan Xiaoyi died with unfulfilled wishes. But Shangguan Xiaoyi clearly intended to kill and seize treasure, so it was no wonder Kong Yu was ruthless. Although Shangguan Xiaoyi was one tier higher than Kong Yu, when it came to combat experience, a thousand Shangguan Xiaoyis were no match for Kong Yu. You see, Kong Yu had been fighting all the way since he began his cultivation. His combat experience was incredibly rich, and Shangguan Xiaoyi, who was merely responsible for reception, was in no way comparable to Kong Yu.
