Yang Kai was upset with Yue He for saying those words. He knew first hand just how strong his brother was. It is common knowledge that there are many hidden dangers and differences for those who have heaven defying methods.
"Yue He, my brother has his own difficulties. He has to rely on nothing but himself."
"We could get him that duo condensing pill."
"Do you want to kill me? I can't use medicines. I literally have to rely on myself to advance. This means that I must advance into the Dao Seal on my own."
"I apologize, Young Master. I was not aware of your circumstances."
"It is fine. I am now free of the restrictive force of the Star Boundaries limitations. I should be able to advance further. Before that, Brother, could I have those trees back?"
"Do you need them?"
"After the fight with those guys I came to realize something and must make an attempt to advance my Glyphs further."
"So you'll be heading into seclusion then?"
"Yes, I'd been keeping Star Boundary alive for a while and didn't have the chance to not be in Seclusion. Also Lan Xun is unexpectedly assertive."
"Lan Xun is fierce."
"Mother was egging her on quite a bit as well."
"I see. Well Mother has always been like that."
Yang Kai and Rai worked together to move the element trees into Yang Rai's Small Sealed World Bead. Yang Rai's Seclusion Chamber had been prepared by the time they were done. Yue He was tasked with compiling a massive amount of information for Yang Rai. information regarding the 3000 worlds. A giant amount of information was inscribed into several jade tablets. They were delivered to Yang Rai for him to go over at his leisure.
Yang Rai had begun to cultivate the trees by supplying them with a massive amount of world force. While he did that he absorbed all the information in the jade tablets. A year passed and Yang Rai had discovered that the tree would bear 9 fruits every few days without any interference. He collected a lot of these fruits. His original plan was to begin absorbing them into his glyphs but when he tested it out the glyphs responded and showed signs of advancing. That was all the information he needed.
Yang Rai had read that it was actually possible to lower the rank of a material by dividing it into pieces. He thought that maybe if enough lower rank materials were combined he could force the advancement of the base material. Similar to how the Glyphs could advance Tiers, maybe the resources could be advanced. This became his new goal. He already knew he could continue to advance the glyphs so now he needed to find a way to gain an unheard of amount of materials. Each glyph needed 2 yins 2 yangs and 1 of each of the 5 elements, so 9 for each. He currently has 531441 glyphs and thus needs 9 times that in rank 1 materials to advance them further. The 2 rank promotion limit was worrying but he decided that he would test to see if his glyphs could absorb the rank 2 resources.