Chinese collectors buy Japanese and Chinese swords from all over the world. Many type 95 NCO swords, Mantetsu, and Yasukuni swords went to China, that's one of the reasons the price of those swords keep going up. They only buy and don't sell.
Nowadays many Chinese(not all of course) don't like people from other countries, especially Americans, they think China and Russia are the greatest. Most collectors don't like to share their knowledge with others.
There are only very few sword books written by Chinese, the collectors in China check Ohmura's website, and use Dawson&Fuller's book(Pirate Chinese version)also Japanese sword books for reference.