昨日青空
- annos singulos: 2018
- Patriam: China
- genus: Animation, Romance
- Studio: Beijing Enlight Pictures, Horgos Coloroom Pictures, CHARM ANIMATION, FORFUN ENTERTAINMENT
- keyword: high school, friendship, small town, china, coming of age, slice of life, unrequited love, school, drawing, school life, donghua, lanxi
- Director: Chao Xi
- cast: Su Shangqing, 段藝璇, 王一博, 斑马