If you are relating to the forum language, we don't support any other language than English. We don't even support *italian* on the forum, even if it's our own language...
If, instead, you are relating to access to the web site and forum from China, that's a whole entirely different issue and, I'm sorry, but until 99% of spammers keep coming from China, we are not going to change the policy of restricting forum access from China. I can't spend my whole day removing fake registrations and their related post from Chinese users that manually register only to post spam on the forum. This is not going to change.
The payment method is of course the simplest in the industry:
1) Freely download the Trial. No hidden or expiring links or "download insurance", no patches, the installer is always freely available and it's always the most current version.
2a) Buy on the web page, select "Register Serial" in the Addon Manager, insert your Serial Number and the product is active.
OR
2a) Buy inside FSX, insert your payment details, product will be automatically activated without even typing the Serial Number.
It can't be simpler than that... we don't have any plans to switch to a different payment method, since we already use the best and easiest to use.