One week ago today, rumors began to hit the market of Chinese payment processors no longer being able to serve bitcoin exchanges. BTC China and OKCoin, the leading XBT / CNY exchanges by volume for much of the past few months, also reinstated trading fees on the same day. Those factors combined have led to reduced trading volume at those exchanges, as well as a glimpse into why bitcoin companies have attracted so much venture capital in 2013. On September 24, BTC China temporarily removed trading fees from their exchange. Bitcoin’s popularity in China ballooned dramatically shortly thereafter as other …