The use of 3D engine to develop digital twins in China is very hot, there may be tens of billions of markets in the future, and almost all projects need to be displayed with browsers, Babylon has great potential, but in the Chinese platform, there is very little relevant information, especially the lack of complete sets, zero-based series of videos, I hope you can open some official accounts, release some teaching video collections, in addition, China’s digital twin projects, often design a large area, including sites, buildings, such as smart cities, Even including indoor scenes, so that the model is often very large, then use Babylon to load, the speed is very slow, can not meet the needs of users, a possible way is to use the model’s tile data format to load, such as 3d tiles such a format, but Babylon does not seem to natively support the loading of files in these formats, I hope you can add the function of supporting such files, especially do not have the problem of breaking the surface, at the same time, GIS information such as terrain often needs to be operated in the project, Babylon doesn’t seem to be easy to use, such as some of Cesium’s capabilities, such as I want to put the project model on the earth of Cesium, users can browse from the earth to the ground, which is very common in China’s digital twin projects, I hope you can think of some ways to make it easy for developers to achieve similar effects, and finally, I really hope you can open a demo video, just use Babylon to make a smart city, including indoor and outdoor, while doing and explaining, This is not only convenient for other beginners, but also contributes to the future metaverse
First, welcome to our Community and thank you for your interest in our favorite tool/toy 
Your first post on this forum is (I believe) of great value for the ongoing development of BJS to become more than just the ‘challenger’ on INTL markets. The community (and I believe the Team) is working hard towards this objective.
With that said, you are making some ‘bold’ requests, related both to tech and com. Fact is, babylon.js is an open and free framework with just a small team working daily (on a payroll) on the framework. All the rest comes from the community (you, me… and all the others).
Honestly, I don’t think that BJS (despite from being MS-owned) will have the resources to go full-com and languages in INTL markets (incl. China). I believe the solution would rather come from the community. We already have a number of members from China, some of which are already quite involved and highly skilled. May be you should try link with them to see if, together, yours would be able to set-up something to push and serve your market. In a similar way of what has been achieved by the (amazing) JP community, leaded by @Limes2018. These guys managed to come together and created awesome resources and meetup for the JP community. So, it is possible. It will however require some efforts on your side 
…but I think I can say that, once on tracks, the Team will be supporting your effort in all ways their current resources allows.
As for the metaverse/smart city demos, there have been already a number of projects made in BJS. May be make a search for it and try make contact with these people?.
In fine, I guess what I’m trying to say is that everything is free and shared in BJS. Which, in turns, also means that if you want to make it better, you will eventually have to add your own contribution 
Well, I hope you’ll find enough advantages to continue your journey with us… and eventually become the next leader of the chinese community of BJS users? 
Meanwhile, have a great day 
So can you do a few template projects, similar to those heavy engines of UE, when creating a new project, you can choose templates to help novices get started quickly, these template projects can contain simple games, simple digital twin demos, etc., which can greatly improve the interest and sense of acquisition of novices with the minimum cost
There is a plenty of such Babylon projects at Github, maintained by their owners 
Could you please recommend some projects Github to us? 
I would start from this list - GitHub - Symbitic/awesome-babylonjs: A curated list of awesome things related to Babylon.js