The Marriage Princess, the Double-Faced Spy and the Northern Wilderness Golden Crown.
Jiang Xuedu was originally the princess of Leng Palace and was sent to Beihuang to get married. She had taken the drug to fake death in the sedan chair, planning to cause the Khan to "suddenly die" and then start a civil war. It turns out that Khan knew her identity and wanted to use her to create a large perimeter defense plan. The heroine took advantage of the situation and pretended to be weak, and for three months she tempted the seven members of the royal court to kill each other. On the last night, she cut off the Khan's golden crown and wrote "Surrender Form" in blood - "I will not marry you, I will only marry you in the coffin."
