Well, price has risen not because of businesses across the world adopting the currency but because of only Baidu saying they will accept Bitcoin. That does not justify 50% rise at all.
How do you know that that's why it's risen? Why does that not justify a 50% rise? Why does that imply the price will suddenly crash? Is this idle chat, or have you attempted to significantly short bitcoin somehow to take advantage of the financial gain from your certainty?
It's probably not just Baidu, but it definitely has something to do with chinese.
See this:
http://bitcoinity.org/markets/btcchina/CNY
(click 6 months and compare to USD) - the Chinese Yen volume was off the charts recently, and during the past day was approx. 40% of the USD's volume.
It seems as if Chinese began buying into Bitcoin.