I saw the following statement in the BBC's short article and video Soyuz: the Soviet marvel that remains on duty after 50 years. As a subtitle in the video:
And it will remain on duty for years: the Russians and the Chinese still work on upgrades to its design.
While it's intuitive that Russia would work on upgrades to the Soyuz spacecraft, I'm wondering about the mention of China. Are they collaborating on the Russian Soyuz, or is there a distinct vehicle in China which is similar enough to b called a Soyuz?