The stock market development for hundreds of years, has formed a number of more mature investment analysis methods. They are broadly divided into technical analysis and fundamental analysis. Fundamental analysis is the study of supply and demand led by the price changes in commodities, while technical analysis is more of a study of some graphs, icons, quantitative statistics and so on. For example, "retracement" refers to the rising trend of commodity prices in the small price drop phase, the price after a short adjustment will continue to rise along the original trend. In this way, the price "retracement" of the time period is the best opportunity to buy, allowing you to seize the rising low price range. In terms of garlic, that is, garlic prices have been rising recently, suddenly there are a few days garlic prices fall back, this fall is not the end of the upward trend, but will continue to rise in the rest stops, buy at this time will be able to lower prices into the field of storage.