The Longest Day in Chang'an (Season 1)

The Longest Day in Chang'an (长安十二时辰, 2019) is a Chinese historical thriller directed by Cao Dun that you can watch online on iFILM. The story unfolds across a single day — twelve two-hour watches inside Tang dynasty China's imperial capital — while a shadow army prepares a strike the city has no idea is coming.

Death-row soldier Zhang Xiaojing (Lei Jiayin) is pulled from his cell with one offer: stop the conspirators before sunrise or face execution at dawn. His partner is Li Bi (Yi Yangqianxi), a sharp official with court connections and zero battlefield experience. The gap between them is enormous. The ticking clock doesn't give them time to close it gradually.

Adapted from Ma Boyong's novel, the 48-episode series became a streaming event on Youku and is widely cited as one of the finest Chinese period dramas of the decade — known for its meticulous Tang-era production design and a pace that owes more to action thrillers than to costume drama. Stream The Longest Day in Chang'an (2019) online on iFILM.