The cross-boundary war in the old land exists without a cross-boundary passage.
However, it gave rise to space secret treasures.
Space secret treasures can independently create cross-boundary passages, making them quite convenient.
But there are numerous limitations.
They need to advance with the world to truly serve as tools in cross-boundary wars, which is one aspect.
If it's the most rudimentary space secret treasure, the passages it creates are actually quite futile, hard to be effectively utilized.
But for Wang Sheng, it's a good thing; the more trivial it is, the easier it is for him to obtain, and the less likely it is to be noticed.
"Some top-tier space secret treasures advance along with the world; they're surely incredibly powerful now, making them hard to acquire. But those space secret treasures from small worlds are actually circulating among some people..."
