Mo Dao Zu Shi - 魔道祖师

I spent the last two weeks - when I was too scatterbrained to work on the Decagram, that is - with watching a very delightful donghua series called "The Founder of Diabolism", which is based on a BL novel and there also exists a live action drama series ("The Untamed") of the material. However, I very much prefer the animated donghua version - not only because of its gorgeous, almost calligraphic animation art that lends a lot to plot and referenced concepts of taoism and buddhism. In addition, there are strong elements of xianxia (fighting style, swords) and folklore (giant snakes, snake-turtle hybrids, spirits, ghosts, spells...) All somewhat familiar & absolute intriguing given my research on Yue's origin in the Decagram. ;)

In short: without giving a summary related to characters and plot (because (a) I don't want to spoil you and (b) I suck at summaries) - it's highly recommended, with my only qualm being that season 2 hang us up on an arm (thus ended on a rather fierce cliffhanger for me), and Tencent has yet to name the release date for season 3 (rumored to be in 2020; but may be later, given that there's also going to be a related animation movie coming).

If you are interested, here's my Youtube playlist for it: MoDaoZuShi-Playlist.
There are subtitles given in a couple of languages, and the English ones are fine (of course I can't vouch for accuracy of translation, but they didn't feel/read jarring when watching. Given that I usually dislike zombies, for me it was a plus that the term wasn't used descriptively, even though it technically would have fit in English.)