The Orphan Girl in the Rivers and Lakes Chases the Murderer! Where Did Xie's Dog Thief Escape?

[Orphan girl VS chess-playing prince + court affairs + suspenseful case solving] Who bowed his head after all? Who asked? Who knows! "Thank you Junyi." "Yeah." "Nothing else to say?" "Yes. Can't say." "Then don't tell me." "... I will keep that window." "What are you keeping for?" "There's a place to stop while you wait for the wind to come back." In the mourning hall on a snowy night, she served a cup of untested tea. He drank it and pressed the murderous intention into his throat. He is a prince with real power, his entire family has died for the country, and there are hidden dangers inside and outside the court. She is an orphan living in the world. Due to the death of her father, the leader of the Wulin Alliance, she entered the palace incognito and worked her way up to the imperial court. She searched through the classics for clues, but she didn't know that someone had already erased the murderous intent from her memorials word for word, and moved her from the wind to a safe place. When the border was in crisis, she presented the old road map left behind by her father, and he used it to invite her to personally conquer the country, taking the very road she had drawn with her own hands. Three months later, she found an unsent letter in a secret compartment of his study. There was only one sentence in the letter, which was her father's last words on the night before his death. There is no word on the signature, only an arc mark of the deflection of the blade. And the direction of the arc mark always points to the direction she came from.