for the current situation, I will choose to seek profit from the exchange because for the time being there are many IEOs that have experienced scams and do not have good potential in the future. so we are better off looking for profits after IEO ends and is listed on the exchange than we buy when IEO takes place because after being listed on the exchange then we can see the development and growth of the altcoin in the market. if it's good then we buy it and if it's bad then leave it.