Unlike to read more link you can use one more link for instantly showing and hiding text anywhere inside your blog post or page. The plugin activates a shortcode which you can use for displaying a customizable link and add some text which you want to keep hidden under this link and as soon the link is clicked it instantly displays the hidden text, another click hides it again.
Install and activate Expander plugin in your WordPress site. After activation use the following shortcode for toggling (show/hide) blocks of your text:
[wpex more]hidden text[/wpex]
How To Customize The Toggle Link ?
Simply edit More (in the above shortcode with something else you like as shown in the following examples
[wpex Know Learn more]hidden text[/wpex]
[wpex Learn more]hidden text[/wpex]