@pkuadt The answer exists already in this thread but your question seems the same as this topic.
To list all the tiddlers with the same tag you need a filter. See filter Operators on TiddlyWiki.com, scroll down to “Tag Operators”.
The First is “tag” filter the input by tag
- All filters by default start with “all[]” but lets include that
- Filter
"[all[]tag[tagname]]"
Examples use in tiddler on tiddlywiki.com
{{{ [all[]tag[Tag Operators]] }}}
<$list filter="[all[]tag[Tag Operators]]">
</$list>
If you expect other tiddlers to display look at the all operator examples.