How to sync posts between different Webflow projects

Problem: I have two different microsites (on sub domains), and I want them to “talk to each other” → although in one direction.

In we release our latest posts. In describe a project, and want to show the latest blog posts about it. How do we do that?

Option 1: Manually add links to each blog post each time.
Option 2: iframe? Not sure how to do this
Option 3: ???

Thank you for your help!

Here is my site Read-Only: LINK
(how to share your site Read-Only link)