Su Qingli was adopted by an embroidery shop in Jiangnan and wanted nothing more than to spend her days peacefully at her little embroidery frame. But one absurd marriage contract binds her to the Duke Who Guards the State, a taciturn, cold-hearted man with overwhelming power in the capital. The Duke’s estate is a deep and perilous place. She expects only cold looks and hardship, never imagining that the husband who is decisive and ruthless before everyone else would lose his composure only in front of her. He gives her the most dazzling brocade in the world just to win a smile from her. He clears every obstacle from her path, yet says all he wants is a warm lamp waiting for him when she comes home each day. When secrets from the past surge back like a tide, she finally realizes that this marriage, which began as a transaction, has long been the result of his careful planning and years of secretly devoted love.