40-ton class heavy helicopter jointly developed by China, Russia
 

So....what is the market for such a machine?

Logging. You can rip them out by their roots!

The market is moving more Chinese troops into the eastern parts of Russia, but the Russians don't realize that yet.
Kipling had this observation about some fool trying to hustle the East ...

Just another piece of the China independence effort, buying the know how for a fraction of the development cost.
China remembers well over a century of misery and oppression because the West had better transportation and better weapons.
They will not be caught out that way again