Entering the Void Ecology is neither difficult nor simple.
It only requires a powerful space-based pet beast to sense the space fabric, and then it can tear open a portal to enter.
Those who don't have such pet beasts can buy tickets to some known safe void ecology secret realms to enter a corner of the void.
But even if you manage to get in, you might not gain anything. It's quite normal to not encounter any void creatures for decades.
In fact, many people have commented that the void is both abundant and barren.
It sounds contradictory, but in reality, it's simply because the Void is too vast. Nurtured by the Mother River, it is nearly limitless, so vast that no one knows where its boundaries lie, and connected to countless worlds.
Some even speculate that it is continually growing and expanding!
Searching for treasure in it is slightly easier than searching for a habitable planet like Earth in the solar system.
It's all about luck!