The Treasured Bajia Book begins filming with William Chan, Zeng Shunxi and Chen Yao as main leads

Here’s what to know about The Treasured Bajia Book production details

If you don’t want to read through the entire article about Chinese drama The Treasured Bajia Book‘s cast, here are the key points:

• William Chan, Zeng Shunxi and Chen Yao have been confirmed as starring.
• Filming began on May 31st, 2025 at Hengdian World Studios
• C-drama consists of 36 episodes
• Character posters and booting ceremony posters released

The Treasured Bajia Book‘s booting ceremony photos, character posters released

Way back in 2016, we were treated to the excellent supernatural, historical mystery drama The Mystic Nine.

Airing from July 4th, 2016 on iQIYI, it came out when longer C-dramas were the norm, with 48 episodes finally being released before the series ended on October 17th, 2016.

Yep, I will admit it was too long. Yep, I do know a fair number of people who dropped it as it did become repetitive in parts.

But, if you stuck with it, despite its length, overall the Chinese drama still turned out to be a pretty satisfying experience.

Especially if you enjoy a good adventure drama with a Tomb Raider-esque plot, with beautiful sets and costumes, and a stellar soundtrack.

Or, if having a leading couple with superb chemistry is important to you. (It is to me).

And now, almost a decade later, we are finally getting its follow up second season.

Called The Treasured Bajia Book (九门 — Nine Gates in Mandarin Chinese) (aka The Mystic Nine 2), the drama began filming on May 31st at Hengdian World Studios, with booting ceremony photos being released this weekend, and with its main cast now official.

That main cast is William Chan (See Her Again), Zeng Shunxi (Snowy Night Timeless Love), and Chen Yao (Best Enemy).

William Chan, of course, starred in the first season of the adventure drama, while Zeng Shun Xi and Chen Yao are new to the second season’s main cast.

Character posters for the three were also released via the drama’s official Weibo. (below)

And, while I am glad to see William Chan back as Zhang Qi Shan, I am particularly happy to see Zeng Shunxi join the main cast as he has been one of my favorites since he did such a spectacular job in his lead role in Mysterious Lotus Casebook.

The Treasured Bajia Book is being directed by Bai Shan (柏杉) (Strange Tales of Tang Dynasty), while writer of the three The Mystic Nine Side Stories, Nan Pai San Shu, (aka Xu Lei or Kennedy Xu) is writing the scripts.

The Chinese drama is being produced by YOUKU, Quantum Pan Entertainment, and Southern Pan Entertainment and consists of 36 episodes.

One The Treasured Bajia Book concept poster has been released so far. (see below)

And, remember, if the 48 episodes of Season 1 drove you nuts, there are now new Chinese rules in place.

That means C-dramas are no longer allowed to be that long after production companies dragged out stories just to be able to make more money, and viewers complained.

At 36 episodes then, this one should be much more manageable.

We still have no idea when The Treasured Bajia Book will premiere (likely 2026), so now is a good time to watch/rewatch its first season.

You can watch all 48 episodes for free via Viki, or if you are a VIP subscriber over on iQIYI, the Chinese drama is streaming there.

And I will be back here on Leo Sigh as soon as more information about this fun-looking C-drama drops.