Nirvana in Fire Season 2: The Wind Blows in Chang Lin Episode 15

Knowing their financial arrangements with the court ministers are at risk, the horse farmers take matters into their own hands and sabotage the peace negotiations between Beiyan and Liang. Ping Jing intends to foil the horse farmers' plan but is unaware Pu Yang Ying is plotting to ambush him in the process. While visiting his mother's unmarked grave, Yuan Qi learns of Pu Yang Ying's trap and hurries to get help from Ping Zhang. (Source: frankly at kisskh)