Walking in White Clothes and Singing in the Snow

Female protagonist, alternate history, martial arts Streets criss-crossed each other. Although the white satin clothes were slightly old, they still fluttered gently in the wind. A thin horse followed him silently with his head lowered. The sword at the waist is particularly eye-catching. On the scabbard, there is a bright gem inlaid in it, which attracts passers-by to look sideways and marvel. Its value is worth ten thousand gold. Although the hilt of the sword has turned black and lost its former luster, it adds a bit of ancient charm. What is particularly strange is that the sword body does not seem to completely fit the scabbard, leaving a slight gap, just like a rare jade hidden in a poor courtyard, waiting for people to see it. The young man in white clothes has a slim but tall figure, and his movements reveal an indescribable gracefulness. His face is eroded by wind and frost, and is red and black. He has obviously experienced the severe cold and war in the north. Her eyes were firm, looking in the direction she came from. She must have just returned from the bitterly cold battlefield in the north. A hundred meters away, several villagers lowered their voices and whispered: "The war in the north has ceased for a few days, and the imperial army has returned in triumph. This man is not wearing armor, so he is definitely not a member of the imperial court. The Xuanjia army in the north is not allowed to go south without purpose. Could this person be... A spy from the northern region?" The words were full of doubts and speculations. This young man in white clothes is actually a woman disguised as a man. The mystery of his life experience is like a fog, waiting to be revealed in the text.