Jussi,
excellent idea... if you want to study Chinese copies. I'd rather spend my time studying nihonto. Believe me, I'll know the difference, even if sometimes I may confuse a low-end shinsakuto made in Japan with a high-end Japanese style sword made in China. In the lowest segment the boundaries are blurred by definition, but the Chinese high-end is equal to the Japanese low-end, at least for the time being.
Then again, I am in the comfortable position of focusing on early koto. And when the time has come that Mr Cheng from Longquan will be able to produce a good copy of a ko-Aoe, Ichimonnji or Hosho, or whatever is old and venerable, I'll give up. I hope, though, that this will never happen. Then again, how do I really know that my Tegai masterpiece hasn't been already made by Mr Cheng from Longquan?