Why are traditional technical indicators useless? What is the principle behind macd, kdj and volume?

I have said a lot about the principle and application of MACD indicator and KDJ indicator in other answers, so I won't repeat them here. You can visit my home page. This is the volume. As the name implies, buying and selling is trading, and the volume of trading is also the number of transactions reached by the buyers and sellers of stocks. As the confirmation of price pattern, volume reflects the number of transactions, which can generally be measured by two indicators: the number of shares traded and the amount of transactions.

First, MACD trading instructions

First, MACD trading instructions

White candle, long red core, the dealer is looking for the bottom shock, and I am also waiting for an opportunity to open some positions. Red hearts and long red candles; The banker's stock is strong, and I also stock up and set sail. Blue candle, red core short, huge green tail long, banker retreat, I also clear the warehouse. A huge amount of green, blue candle is long, the trend is broken, and it is urgent to leave; Don't itch when you are waiting to fall.

Second, four-color K-line KDJ main drawing

Second, four-color K-line KDJ main drawing

As shown in the figure, the buying and selling points are very clear, buying low and selling high.

Third, comprehensive trading volume.

Third, comprehensive trading volume.

As shown in the figure, the green column indicates a downward trend, and the red and yellow columns indicate that the transaction volume has increased and the upward trend has begun to appear.

Fourth, the volume is bought.

Fourth, the volume is bought.

As shown in the figure, there are purse indicators and rising tips, which are buying signals.