Hello, Ki-Gi-nim. Thank you for taking the course. There are various technical indicators other than Bollinger Bands. It is important to analyze several technical indicators together on the Upbit chart screen and find an indicator that explains the trading timing well. This is the beginning of algorithmic trading. You can create an algorithm using these indicators, then verify the algorithm through backtesting and integrate it into a trading bot. I hope you have good results in the future. Thank you.