Influence of power coal and coking coal coke. Shanghai and Shenzhen stock markets fell sharply because of the influence of thermal coal and coking coal coke. According to relevant information, due to the beautiful water release last year, the prices of bulk commodities have risen sharply, so pro-cyclical non-ferrous metals, coal, petroleum and chemicals are the main forces for this year's rise. They had a wave of increase at the beginning of the year, and continued to increase in volume in June, forming a wave of main increase, and some leveraged funds also participated in it, so there was a technique of shorting futures.