The Longest Day in Chang'an

Zhang Xiaojing is a former soldier in the Longyou Army who served on the frontiers of the Tang dynasty. After retiring, he joined the local security of the city of Chang'an, the heart of the empire, but he was imprisoned and sentenced to death after an incident in which Zhang killed 34 members of a gang that murdered his former Army commander Wen, and then killed his current commanding officer. Zhang is unexpectedly reprieved when plans for a major rebellion are uncovered, involving a terrorist cell, the Wolf Squad, which has slipped into Chang'an before the Lantern Festival, one of the most spectacular days in the ancient Chinese calendar. To secure the safety of the Chang'an people, the Jing'an Si (Department of City Security) grants Zhang a special 24-hour amnesty, and he is ordered to catch the terrorists and foil the plot before the day is out. If he succeeds, he will be freed, otherwise, he will be executed. But to his surprise, Zhang discovers that he has been drawn into a far greater conspiracy against the empire than anyone had suspected. ==Cast==

Main • Lei Jiayin as Zhang Xiaojing • Jackson Yee as Li Bi Supporting • Zhou Yiwei as Long Bo • Peng Guanying as Qin Zheng • Wu Xiaoliang as Cao Poyan • Han Tongsheng as He Zhizheng (based on He Zhizhang) • Cai Lu as Cui Qi • Lu Fangsheng as Yao Runeng • Yu Ailei as Yuan Zai • Djimon Hounsou as Master Ge (voiced by Chen Jianbin) • Eldos Faruk as Yazedbozid (Monk Yisi) • as Monk Jingde • Zhao Wei as Xu Bin • Song Yunhao as Cheng Shen (based on Cen Shen) • Feng Jiayi as Emperor Xuanzong of Tang • Reyizha as Tan Qi • Xu Lu as Yan Yuhuan (based on Yang Yuhuan) • Wang Herun as Wen Ran • Ai Ru as Wang Runxiu • Gao Ye as Li Xiangxiang • Li Yuan as Yu Chang • Wang Sisi as Ding Tong'er • Qu Shanshan as Xu Hezi • Zhou Lula as Li Yu • Sukhee Ariunbyamba as Mage'er • Yin Zhusheng as Lin Jiulang (based on Li Linfu) • Yang Yi as Wen Wuji • Ge Zhao'en as Prince Yong • Robert Gilabert as Pifu ==Soundtrack==

Before shooting, Cao Dun and the screenplay writers read the original novel three times. The crew spent 7 months building the street scenery of Chang'an city. In order to design the costume of Taoist priest Li Bi, the crew went to consult the Chinese Taoist Association. Shooting began on November 11, 2017, and ended on June 15, 2018. ==Broadcast==

The series aired on Chinese online video platform Youku on June 27, 2019. As of July 1, 2019, it got released in other Asian countries, such as Japan, Singapore, Malaysia and Vietnam. It was released in North America through video streaming website including Viki, Amazon and YouTube. ==Reception==

The series has earned high praises. Douban, a major Chinese media rating site, gave the drama 8.6 out of 10. ==Awards and nominations==