I replied to his message just out of curiosity. Because I wanted to see it till the last step. But unfortunately I couldn't proceed further because he asked me to invest. Still, I wanted to know about the next step from him.
Invest? Where did he asks you to invest? Don't follow what he said because you don't know what will happen later.
What he tell you it's about arbitrage trading which is not always profit because you need to consider about the time of confirmations, the price between two exchanges, the fee and others.
It is not easy to do arbitrage trading because the price of the coin can increase or decrease anytime. So it need a fast connection, confirmation, and low fee.