A teacher held up a hundred-dollar bill in class and asked the students how much it was worth. The students answered in unison, "One hundred yuan!" The teacher took out a worn-out hundred-dollar bill and asked the same question. The students still answered, "One hundred yuan!" The teacher smiled and said, "Do you know? This is the time value. Whether the bill is new or old, its value is the same. But in the financial field, time value is a very important concept.$BTC $ETH #第55期新币挖矿IO #BTC翻倍之路 #现货以太坊ETF获美SEC批准 #CCG合约量化机器人