A country where cryptos are out rightly banned, will bring an altcoin season? I highly doubt that.
Just one statement by the president about blockchain means nothing at all. Crypto space has gone unaffected (both positive and negative) through many such news.
The thing to notice is that Chinese are involved heavily in OTC crypto trades which goes undocumented. That doesn't really affect the market price as such. So increase in searches doesn't mean that altcoin season is upcoming.
It is not really like all the crypto currencies have got banned by China. It is more or less like that Chinese government is afraid of losing its power and want to introduce its very own crypto currency. In the digital market whoever controls bitcoin, controls the whole market. China desired that but now has got that this is impossible. Countries that are advanced support technology innovations certainly.