"People say 'oh, those experts', but we're seeing what we call potential risks being rolled out. This is not what the experts say, this is what the economy is showing. " If classical economists have interpreted the "market" as "laissez-faire", coase has answered the question of how to achieve "laissez-faire" or "price mechanism". At this year's Shanghai international wine and spirits trade exhibition, we found more and more Brazilian exhibitors. It is believed that with the deepening of china-pakistan economic and trade relations, Brazilian wines can make a big difference in the Chinese market. Late last year, as Brazil's wine industry "leader" of the aurora winery has completed a total for the Chinese as much as 2.16 million barrels of wine export agreement, broke the single export record the wine industry in Brazil, which may be the trend of arguments. According to the local biggest news agency Press Trust of India news agency (Press Trust of India) reported that, according to official sources in nine exchange about 2 million registered users, about 400000 to 500000 people have been conducting currency trade and investment.