Chunyi Lin says feel the emptiness. Could someone please give a description of what this means? Is this the same as what is called the void of the universe?

I'm not exactly sure what this concept is or how to get to that state. My idea is that it means the universe before it became anything at all, stars, planets, etc. And for us, maybe before we took on any kind of identity. If this is true, does anyone have any suggestions of how to connect with this state? Thank you so much!