The guy was a madman who would not care about the consequences once he went nuts...
He could be right in front of the Emperor's door and he would still force his way inside!
While they were on the outskirts, it was still within Imperial and if they were to really fight there, it would definitely catch the attention of the related parties.
Given Lu Tingxiao's influence, those who were overseeing the incident and knew him would give him some leeway, but this was only if both parties were beneficial to the officials.
If he were to cause a big ruckus here and attack Yun Shen right away, it would be a different story...
Ning Xi was shocked when she saw Lu Tingxiao accompanied by formal and ridiculously armed forces. She did not expect Lu Tingxiao to go to such great lengths for her and take such a big risk.