Song Qingyu, the most beloved little princess of the Song Dynasty, grew up with Fang Huaijin, the prince of the Hou family. She named him "Huaijin" from the age of seven, and he promised that "I will only protect the princess in my life." The swing under the locust tree, the lights in the school grounds at night, the last hug before leaving for the war - she thought he would come back after the war.
But the enemy emperor Yuan Haonan came to the city in the name of marriage and wanted her by name. On the day she got married, she met a black flag procession at the city gate - the coffin of General Huaijin who died for his country was slowly entering the city.
Once out and once in, this life will be separated forever.
She went to the enemy country in her wedding dress. She raised a pot of crabapples on the windowsill in a foreign land and wrote him thirty-four letters that could never be sent. Yuan Haonan fell in love with her, and the concubines in the harem reconciled with her, but in her heart she always only had the boy waiting for her under the locust tree.
"Brother Huaijin, I can't write anymore."
"Will you pick me up?"
"This time, I won't leave."
