Taking the love between Wang Yuanjunjie and Ni Fanxi as the main line, it connects the fireworks world of an old alley. From their first encounter when they were teenagers over spilling soy sauce, to the chalk battle in high school class, to studying side by side by the floor-to-ceiling windows of the university library, their love grew quietly amidst the aroma of medicine in the Chinese medicine shop, the hustle and bustle of the supply and marketing cooperative, and the jokes of their old neighbors.
The Wang family's medicine grinder spins time, the Zhu family's needlework basket makes up for daily life - Wang Bisuo and Zhu Liuyu's bickering hides tenderness, Li Tian's brother and sister's Tong Yan Wuji becomes a god assist, and Dai Qinglong changes from a troublemaker to a guardian. From the promise of taking the oath of college entrance examination to the ring for college graduation, from the red candles in the wedding room to the security of their children around their knees, their love is not earth-shattering, but it is filled with the steady flow of steady flow in the mouthful of hot soup left for each other, the umbrella they hold together on rainy days, and the light that stays on late at night.
When the old alley is demolished, the neighbors move into the new building with the medicine shop plaque, shoe repair stall tools, and tailoring scissors. What remains unchanged is the warmth of visiting each other; when the blue hair is dyed with frost, the white-haired couple at the golden wedding celebration looks at the playing grandchildren, and they understand that the best time is to spend a lifetime with you in fireworks - the fragrance of medicine soaks in the years, and love letters are hidden in daily life.