I'm aware of Scion's chinese videos but since he did several videos on other mmos during that time so it was hard to track. But thanks to you (a legit thank you), I decided not being lazy and found a video from his account and compared it to fu's skill book/break videos and you were right about the updates. Heck they had several skillbooks for other ninjas when summon cultivation came to their server. But if I were to think like Oasis, it could be for longevity purposes meaning they release updates individually to ration the updates for future events but that doesn't help those players who want new updates frequently.

I was always aware China did things differently th*, but I think it would be detrimental to the game not to add things like the Tsunade npc and the "skillbooks treasure". At the very least, adding meaningful breakthrough ninjas like Itachi, Kurenai (we got her, yay!) and Yamato that have legit impact in the game should be a priority. I dont expect Gaara, Sage Naruto, the 2 Kage super rares and the gold&silver brothers anytime soon, because they are relatively recent additions in China, but the ones I previously mentioned have absolutely no reason not being in the game, they add so many possibilities!

Personnally, I have been waiting for Itachi for ages, hopefully this new trend of adding breakthroughs in pairs keeps happening. This whole thread was started to bring attention to this forgotten system that adds so much richness to the game. Keep pushing threads like these to the top and lets show Oasis we want our books!

There is misinformation about most of the game, Oasis releases things on its own timetable and post absolutely nothing aside from the weekly update. They break up new systems in several pieces to keep things going longer but they dont share much information about the systems or future plans to update them. Getting information from the chinese server is always patchy as it comes from non chinese youtubers, savvy players who grabs info from here and there like I did and people who played on the chinese servers but dont grasp either chinese or english completely. All these people can only convey some information, the task to get everything in a single compedium is pretty big and no one person should be asked to do it alone. The guy who did the translations for the breakthrough skills is a good example, he did a big job and that was only one system. So unless a community effort is made to gather all the information about the game into a single compedium, we are kinda stuck in this "misinformation" you mentioned.