The Princess Royal Season 1 Episode 6

Pei Wen Xuan takes advantage of the situation to file a report on Yang Quan to Li Ming. After Yang Quan fails to kidnap the princess, he assassinates a court official. Moreover, he continues to get defeated on the northwest battlefield. Wen Xuan voices out that there's something fishy going on. Li Ming takes that opportunity to promote Pei Wen Xuan to a censor and asks him to investigate the Yang family.