In Suzhou in the south of the Yangtze River in the Sheng'an Dynasty, there are two simple relationships hidden between the smoked willow-painted bridges - Su Tao, an orphan girl from the medical clinic, and Lu Yan, the legitimate son of the Marquis of Zhenbei, became friends because of a broken-legged milk cat when they were young. She used herbal medicine to treat his wounds, and he secretly stuffed sweet-scented osmanthus sugar into her to sweeten it; while she guarded the hanging pot in Huichun Hall to help the world, he climbed over the wall to help her dry medicine and settle accounts.
From childhood to haircut, from college classmates to separated futures, the two wrote "accompanying" into the longest love poem. She studied medicine and treated emergencies, and he resisted family pressure for her; he experienced and grew up, and she followed him on horseback to guard the border with a lantern. When the drug dealer alliance was framed and factional strife spread across the court, they worked together to investigate old cases to clear their grievances, resolve misunderstandings with sincerity, and resolve crises with tacit understanding.
He gave up his title and went to the south of the Yangtze River just to accompany her to build a "Tao Yan Medical House"; she studied medicine and made clothes, doting him from "the prince of the Marquis Mansion" to "Su Tao's husband". When Xiao Taozi was learning to walk, she held the hems of their clothes, and her daughter Nianyan held an inkstone and asked, "Why do parents always laugh?" - Time passed by the wisteria flower stand, and they finally understood: the best love is from childhood sweethearts to gray-haired, always side by side, watching fireworks together.