It was a simple problem that Yang Rai had. The stronger he made his Glyphs the ever increasing number of resources he would need in order to succeed. Let alone that he needed to do the whole process several times at the same time. It only ever got worse too.
You see the way his World was so powerful is because of him. However, when a cultivator practiced a Dao he himself did not, once they condensed a dao seal he would form a dao seal of that same equivalent strength.
As you can imagine since he has been pulling in so many different cultivators and all with different attainments of different Daos he quickly ended up with several more Dao seals. All of which only ever grew stronger over time. He was currently sitting around 1000 Dao seals and it was only making the problem worse.
He didn't want to just go for the Open Heaven Realm when this kept happening. He didn't know what would happen and he really didn't want to stunt any of the people who lived in his world.
So Instead Yang Rai had been working on creating many of the Cultivation Springs. He couldn't finish them all because they did need time to acclimate themselves and begin to work properly. He did this while waiting on resources for his new Highest Rank resource generators.
It took 400 years but he and the little world Spirits helped him complete 3 more Cultivation Springs. He set them up so that the cultivators in his world could gain benefits from this good thing as well.
He had stocked up a ton of StarField Fruits this time too. He did some similar things this time too however he prepared the starfields within to be absorbed by the Open Heaven realms another way. Using the very same beads he had from before he would sort out all of the dead things and only give out the ones full of life. The high rank fruits were adapted into his world and would slowly move all of the people living in these worlds to the upper world.
After doing this with an absolutely crazy amount of StarField Fruits his Origin Spirit count jumped significantly. He needed to get more to manage all of the glyphs he would later have in his newly formed Dao seals.
The leftovers from these Star Fields were turned into StarField Trees. If there was anything left over after this he simply turned them into snacks for when he meets a Giant Spirit God. This raised his number of StarField trees to 243.
His next goal was to synthesize a Highest rank Resource generator. However he quickly realized the sheer number of resources he would need exceeded his capacity to control. This meant he needed to further Temper his glyphs. It was going to be massively expensive beginning now. He reached T12 R5 glyphs before his resources that wouldn't be used for the highest rank tree were gone. He ended up realizing after this… He needs more resource generators. And the sooner the better.