The Citroen Quattre is essentially a slightly redesigned Citroen C4 for the Chinese market, big changes to the car would be a lack of a full glass roof, and the lack of VTS models. The C4 moniker was dropped in favor of the Quattre name, due to the Chinese dislike of the number 4, which sounds like the word for death in Chinese.
China has always been a special market for Citroen, China gets some models that Citroen’s European homeland doesnt get, and vice versa. The latest China only model appears to be a Citroen Quattre notchback sedan, which will sit below the Citroen C-Triomphe. Oddly, the C-Triomphe was touted as a notchback sedan version of the European C4, the Triomphe was meant to satisfy the Chinese appetite for sedans, but the Citroen Quattre sedan appears to be another addition to the Citroen sedan line up.