Why would they go with ripple when Litecoin can do exactly the same thing, while supporting a truer open sourced model? Just saying. China has explicitly discussed Bitcoin as a threat to the RMB (Chinese Yuan), not about LTC. LTC could potentially be an open portal to bitcoin.
You can not buy Litecoins with Yuan... You can buy Litecoins with another cryptocurrency only...
you can, by okcoin etc, although people no longer trust okcoin