<h4>资金转移说明</h4>
<ul>
<li>SAVING->SAVING: 银行之间转账、支付宝银行之间互转、ATM存取现金等。</li>
<li>SAVING->EXPENSE: 支付食品、保险、车辆、教育等费用</li>
<li>SAVING->INCOME: 很少用，比如多发的工资需要还回去。</li>
<li>SAVING->DEBT: 出借款给朋友、归还欠款、归还贷款、还信用卡、代朋友付款等。</li>

<li>EXPENSE->SAVING: 退款，比如订单取消、宾馆退回押金款等。</li>
<li>EXPENSE->EXPENSE: 很少用。</li>
<li>EXPENSE->INCOME: 很少用。</li>
<li>EXPENSE->DEBT: 朋友代收退款。</li>
</ul>