How do I enable the feature of related pages

Plug-ins ??

Other Than plugins there is no other work around! ??
Cuz My website is already heavy on plugins and this will reduce the web experience for the users. :'(

You can do that without plug-ins but I don’t think you could expect great advantages. Of course this means that you have to code something that does that.
Listen, everybody, or quite, use plug-ins for related posts, it’s not a “simple” thing create that kind of feauture. We’re not talking about the visualization part, we’re talking about the “how to relate N posts?” part. Cache results, or not… and other beautiful and fun things ??
Is it worthwhile?

Of course there are some expensive and some cheaper (in terms of resources load). Some more content-oriented than others… etc

Thanks for your Valuable suggestion!
I really appreciate it. ??

You’re welcome Paul. ??
Hope you can find a good solution.