the reason I missed bitcoin, because basically I don't know what bitcoin is, and after my friend introduced bitcoin to me, I didn't believe it, and I was not at all interested in bitcoin, even though my friend had guided me to learn about bitcoin, I still don't believe it, only in 2019 I played bitcoin, and tried to learn bitcoin, you can say I'm too late to believe in bitcoin, if time could be turned back, I will study bitcoin from the beginning, and will never let go of bitcoin..