{loop $tags $k $t}
{$t[alt]}
{if $t[avg_price]>$t[avg_priceb] and $t[percent_change]<>0}↑{$t[percent_change]}%{elseif $t[avg_price]< $t[avg_priceb]}↓{$t[percent_change]}%{else}→{/if}
{if $t[avg_price]>0}{$t[avg_price]}元/平米 {else}{/if}
{/loop}