以史为鉴4-为啥4月1日是所有投资者都要知道了解的重要一天？

<p style="font-size:16px;color:#333333;line-height:30px;font-family:Helvetica,Arial,sans-serif;font-weight:normal;text-align:justify;hyphens:auto" data-flag="normal">好的投资者都是好的学习者，甚至是终身学习者，小孙在投资路上与你一起成长！</p><hr style="margin: 20px 0px;height: 1px;background: #ddd;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: solid;border-style: sol...