He had heard about Adjutant Nan a lot from his subordinates. And after knowing about Nan Hua's identity, he asked them to investigate what they could know about this adjutant behavior and so on.
There was many information about Nan that Long Qian Xing didn't pay close attention before. In the past, he only thought that Nan was a body double and bodyguard that Old Master Nan arranged to protect Nan Luo.
Out of respect, he didn't investigate much.
After all, many of his men also came from various background and it was not easy for him to investigate other people's background. Especially in this era where it was human's words that held the highest position.
Who knew whether there will be lies?
It was harder to detect.
But from the information gathered, he found a few points about Nan Hua that he never thought before.