
Within minutes of The Untamed airing, historical suspense drama The Longest Day in Chang’an 长安十二时辰 released twelve episodes without any warning. You can watch it here (update: now region-blocked; update 2: it will be up on Amazon, Youtube and Viki sometimes in July). Only the first four episodes are available for non-VIP members. I’m not sure when/if the rest will be available for non-VIP members.
Like The Untamed, there’s no new promotional materials other than the previous poster and synopsis here and trailer and stills here.
Trailer below, BTS here and here