At the beginning of the revival of Cryptocurrency in 2017, quite a lot I participated in an ico and nearly 70% of the ico at that time was really beneficial, but entering 2018, I began to lose confidence in investing in ico, because several times, I was fooled by fraud projects and it makes me lose money, and also gives a deterrent effect for me, for I haven't tried it, but I think Ieo and ico have some similarities and it makes me a little hesitant to invest.