Duanzi❤: Originally, when I entered the currency circle, I just wanted to purely speculate on coins and make some quick money ~ Unexpectedly, I have learned in the past few years: POWPOS, Byzantine problem, DAG, witch attack, 51% attack, #defi , #nft , #gamefi , mev, game theory (3,3), presidential election rules, US relations, the Russia-Ukraine war, group control for gold, airdrops, how to become a citizen of the Philippines, Vietnam, Bahamas, Malta, Palau... Now I have to learn US bankruptcy law! !