请老师们帮助看看，问题出在哪里了。
我需要编辑时间后，时间早的就排在后面，时间最新的就排在前面。
谢谢老师们了
<div class="section2"> {eyou:channelartlist typeid='4'}
<div class="container clearfix">
<div class="section2_left fl ">
<div class="imgbg"><em class="letter">{eyou:field name='lmjc' /}</em><span class="letter1">{eyou:field name='typename' /}</span><img class="letterq1" src="{eyou:global name='web_templets_pc' /}/skin/img/q1.png"><img class="letterq2" src="{eyou:global name='web_templets_pc' /}/skin/img/q1.png"><img class="letterq3" src="{eyou:global name='web_templets_pc' /}/skin/img/q1.png"></div>
{eyou:arclist limit='0,1' titlelen='30' infolen='25'} <a class="div_img" href="{$field.arcurl}"> <img src="{$field.litpic}">
<h2 class="tt"><strong>{$field.title}</strong></h2>
<div class="info">{$field.seo_description}</div>
<div class="time">{$field.add_time|MyDate='Y-m-d',###}</div>
</a> {/eyou:arclist} </div>
<ul class="section2_right fr block" >
{eyou:arclist limit='1,4' titlelen='30' infolen='25'}
<li> <a href="{$field.arcurl}" class="clearfix">
<div class="num fl">0{$key}</div>
<div class="info fr">
<div class="tt clearfix">
<div class="tt1"><strong>{$field.title}</strong></div>
<span class="time fr">{$field.add_time|MyDate='Y-m-d',###}</span></div>
<div class="contentinfo"> {$field.seo_description}</div>
</div>
</a> </li>
{/eyou:arclist} <a href="{eyou:field name='typeurl' /}" class="morecir">MORE</a>
</ul>
</div>