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.
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.