CR indicator, also called intermediate willingness indicator, has many similarities with AR and BR indicators, but it has its own unique judgment function. It is a medium-and long-term technical analysis tool to analyze the strength comparison between long and short sides of the stock market and grasp the opportunity to buy and sell stocks. The Chinese name of VR (Volume Volume Ratio): Volume Variation Rate, which mainly measures the heat of stock price from the perspective of volume, is different from the price perspective of AR, BR and CR, but it is also based on the principle of "contrarian operation". Indicators with the same nature as VR indicators include PVT, PVI, NVI, A/Dvolume, etc. WR indicator, called William indicator in Chinese, is a stock market term, which indicates the relative position of the closing price of the day in the whole price range in the past period. It is an indicator with both overbought and oversold, with clear boundaries between strength and weakness. Its main function is to assist other indicators to confirm signals.