China placed a total ban on cryptocurrencies,i do not think they did that to the blockcahain technology,china happens to be creating it's own national cryptocurrency that's definitely gonna work using the blockchain technology..
TRON and BAIDU partnership has nothing to do with the trade or exchange of cryptocurrencies,baidu happens to be an internet sensation in that part of the world and they are looking to capitalize on the widespread effect of the blockchain network by partnering with one of the biggest block chain networks(Tron),To provide it's users better services,considering how decentralized the system is, it'll make it's services more accessible and open to its customers/users
China is one country that has an indirect ban on cryptocurrency
It's a total/absolute ban on cryptocurrency and cryptocurrency related activities,but it didn't place any ban whatsoever on the blockchain technology, don't mix them up.