mud7 Not really. If they want to paywall or premium, they might need your agreement. But after the novel is complete, then I don't know. But since you have copyright, you can counter everything. So it will work out well.
I believe the purpose is like here in webnovel, the initial novels and chapters don't get any revenues. So the Chinese author cannot say, I need money or you cannot use my novel in webnovel.com. Since they have these rights (royalty free one included), they can give us these novels initially for free. They are like second owners of the work.
Disclaimer: I don't law. So I have no idea. I am just guessing lol