The new oriental cherry blossom cultivar ‘Longyun’ is a mutant plant of Cerasus conradinae from Quanjun, Jinzhai County, Anhui Province, China. In March 2018, 200 seedlings were grafted asexually. Through the observation and comparison, the traits of grafted seedlings are consistent and stable. In 2019, it was officially named the new Cerasus conradinae cultivar ‘Longyun’ (the new plant variety right number: 20190192). The flower of this variety is single, five pieces, dark pink, oval, 1.2-1.5 cm long, 0.58-0.74 cm wide; the style is glabrous, shorter or slightly longer than stamens; drupe ovoid, flowering in mid-to-early March, fruit period from April to May. In attition, it possesses a deep pink flower color, open petals, a large flower diameter, large and dense flower volume, open tree shape and consistent flowering period. Moreover, it is light-loving, drought-resistant and barren, and likes acid to slightly acid soil, and has strong adaptability. It is suitable for gardens, parks, roads and other landscape for greening applications. It can also be cultivated in subtropical and some warm temperate regions.