Once in time, Princess Su Yun of the Tang Dynasty fell from Chang'an's Qujiang Pool into the hustle and bustle of the modern city. After taking off her Yunjin palace attire, she relied on her palace drinking skills to set up a "Chang'an Snow" milk tea stall in the night market. She used ancient ice cream and elegant tea fragrance to outline a taste memory unique to the prosperous Tang Dynasty. Wang Zihao, a graduate student in the Department of Computer Science, was attracted by this unique ancient charm. Starting from the encounter over a cup of milk tea, he patiently taught her to adapt to modern rules, listened to her old dream of Chang'an, and unknowingly fell into tenderness. When Su Yun frankly traveled through the truth, the bond that spanned thousands of years was not broken, but took root in understanding and protection. In the fragrant milk tea, the princess of the Tang Dynasty and the modern youth join hands to fight against the confusion of a strange world, allowing a love that spans time and space to bloom quietly under the neon lights and moonlight.