Luo Xiao did not know that the assassin was suffering behind them. Due to Jiang Yao activating a protective array around his lover, the sounds behind them were all hidden from him.
Even when the assassin had fallen to the ground and tried to make a lot of noise, the sounds were blocked, and Jiang Yao showed no intention of caring.
The assassin began to feel cold at heart. He realized that this Seventh Demon Prince did not plan on keeping him alive. Even the possibility of gaining information was not as important as clearing away all dangers.
Unfortunately, since he had initially expected that his life would not be at risk, he had not used a lot of power to escape right away. He wanted to save his strength, and then attack when he got an opening.