April in Seoul is the most poetic season of the year. At this time, along the banks of the Han River, on Yeouido, along the middle road of Jiryeo Island, outside the walls of Gyeongbokgung Palace, beside the ancient paths of Changgyeonggung and Jongmyo, as well as on the campus paths of Yonsei University and Ewha Womans University, dozens of varieties of cherry blossoms such as sakura, Imaejiyo cherry, and Daishima cherry are blooming one after another. The pink and white flower clouds, like a veil, cover the entire city. When the breeze blows, the petals flutter down, forming gentle "cherry blossom tunnels", and pedestrians walk slowly among them, as if stepping into a flowing ukiyo-e painting. In the streets and alleys, people spontaneously organize cherry blossom viewing parties (called "haeje" in Korean), spreading picnic mats under the trees and sharing kimchi rice balls, Korean fried chicken and chilled rice wine; at night, some parks will light up warm yellow lights to create a quiet and romantic atmosphere of "night cherry blossoms". In addition, every April, the Seoul City Government will release the "Cherry Blossom Frontline" prediction map, combining temperature and flowering model, to update the best viewing period for each area in real time, making it convenient for local residents and overseas tourists to arrange their schedules. Looking forward to April in Seoul, it is not only waiting for a blooming of flowers, but also embarking on a spring date that integrates the beauty of nature, historical heritage and urban vitality.