The only question I have about this is _who is doing the thinking part of their coding_? Someone has to be working just a furiously architecting and concepting for all these programmers hammering out code for 14-16 hour days.
There are tech/team leads to do it, but their approach is different. Tried-and-true solutions are picked out from what's already been built at the company, and that cuts down on time consuming brainstorming and planning phases and the debates between devs and product managers. It's in some ways more conservative than what we see in the West with more copy and pasted byproducts of the planning process
Another question is regarding open source tools, maybe it's a US bubble but I don't think I've heard of any Western companies adoping Chinese open source tools.
The path of least resistance is contributing to English languages tools would you know if some of the commmits to insert tool here were written by someone born in China?
Vue.js could be one open source tool that many US companies are adopting.
Harbor was originally made by VMWare China, thats one of the few open source tools I know of.
A lot of Chinese contributors to many Hadoop projects