After seeing this, Luo Cheng let out a sigh of relief. He had used up a quarter of his Star Qi while battling Lu Muran and to execute that final attack. He could've used the much more productive Golden Lightning from his Lightning Bone, but, he didn't want it's existence to be known yet, at least not now.
As for Ma Xutao who was standing beside Luo Cheng, he was still immersed in shock, unable to recover in such a short period of time. Even though Ma Xutao was one of the top ten geniuses and also Manager Ma's nephew, who would not be astonished easily, what happened today had left him in utter shock.
Not only had Luo Cheng surprisingly ended up killing Lu Muran, he also managed to instantly hunt down the two escaping 7th Star Xantian Realm youth cultivators with his Bloodline Power and Sword Qi with only a single strike.