So What Is a Heikin-Ashi chart and how does it look like?

Heikin-Ashi chart looks like the candlestick chart but the method of calculation and plotting of the
candles on the Heikin-Ashi chart is different from the candlestick chart.
In candlestick charts, each candlestick shows four different numbers: Open, Close, High and Low price
(It is recommended to learn the candlesticks first) and each candlestick is independent and has no
relation with the previous candlestick.

But Heikin-Ashi candles are different and each candle is calculated and plotted using some information
from the previous candle:
1- Close price: the close price in a Heikin-Ashi candle is the average of open, close, high and low price.
2- Open price: the open price in a Heikin-Ashi candle is the average of the open and close of the
previous candle.
3- High price: the high price in a Heikin-Ashi candle is chosen from one of the high, open and close price
of which has the highest value.
4- Low price: the high price in a Heikin-Ashi candle is chosen from one of the high, open and close price
of which has the lowest value.

So candles of a Heikin-Ashi chart are related to each other because the close and open price of each
candle should be calculated using the previous candle close and open price and also the high and low
price of each candle is affected by the previous candle. So a Heikin-Ashi chart is slower than a
candlestick chart and its signals are delayed (like when we use moving averages on our chart and trade
according to them).

What are the advantages and disadvantages of this delay?
This delay has made the Heikin-Ashi candle as a good indicator for volatile currency pairs like GBP-JPY
because it prevents us from rushing and making mistakes amd trading against the market.