Artifact Spirits Learn Artifact Refining

"I had a feeling this would happen. And so I prepared worlds for you in advance. Just tell me when you're done accepting worlds. And don't worry about taking too many." Lei Jin said pulling out more worlds for his daughters to integrate into their Inner Domain.

Slowly but surely Xiao Ling's world count was increasing. Xiao Dan was similarly keeping up, though she was a slight bit slower since she was still younger than Xiao Ling and less experienced in using her strength. 

World after world was integrated one after the other. Each one created ripples in Lei Jin's Inner Domain. Albeit they were rather tiny and didn't have nearly enough strength to cause him any discomfort. Until… 

"Father, I can't take another. This is my limit for now." Xiao Ling said, being the first one to finish. Her tone was strained and yet she spoke with more fluency. If she acted like a child before she was now closer to a teenager in her mannerisms.

Shortly after Xiao Ling's statement… "Daddy, uhm… father? I think I have reached my limit too. I can't handle another world. I feel like I do after a big meal, full." Xiao Dan said, in a similarly strained voice. She too also seemed to develop some more mannerisms. 

"Good, you both reach a total of 120 worlds. This is enough to finish four layers of that pattern I showed you before. You have a few errors in the formation but I'll fix them for you so it is easier to understand." Lei Jin said, and in the next instant… "There, that is the best possible formation using the three at the center. You should study this formation and comprehend its; profundities, Deficiencies and efficiency. Once you fully comprehend these things you'll naturally become stronger in time." He continued his explanation. 

"Father… this formation is… I can sense there are already worlds becoming more vibrant and full of life. What is this formation based on? It's so powerful." Xiao Ling asked. 

"I have a couple of inspirations for creating this formation. However, the main one is how the Highest Rank materials continually generated 9 new elements of a lesser rank. In this case the 9th rank worlds of mine are at the absolute peak as far as I can tell. So the extra strength gets transferred on down, rapidly improving all my worlds evenly. I am proud to say I no longer have any worlds left at the 2nd rank. And many of the 3rd ranks have become 4th rank already." Lei Jin answered. 

"Father, what about us? Your pattern follows the rule of nines. While ours follows the rule of threes. What happens if we want to change the rule to five, seven or nine?" Xiao Dan asked.

"You'll need to rearrange the worlds again and re-establish the proper channeling routes. However in your case as well as your sister's case, you'd likely need to have some more of your own brand new worlds. To help fill the gap such a change would cause. For instance if you wanted to go to the rule of fives you'd need to sacrifice your whole fourth layer and add 35 worlds to your total. But if you wanted to keep your layers, you would need to add 660 new worlds to your count." Lei Jin answered calmly. 

"Understood father! Can we stop surging our world force now? I am stable now." Xiao Dan asked. 

"Yes, you may calm yourselves now. I'm eager to see your cute faces again." Lei Jin chuckled. 

The two girls reformed their body's. However, they were different. Both were a little more grown up and looked more like older girls. Not yet young women. Their mortal appearance was similar to a 9 or 10 year old. Their power on the other hand was mighty and now very nearly as strong as Moon's Nether Glimmer and Sun's Burning Shine, before those twins learned how to properly control more strength. Thus making them stronger by default. 

"Father… I have another question. Which is better? A higher rule? Or more layers? Or is there a difference?" Xiao Ling asked, sitting down on Lei Jin's lap. 

"That's right father… It seems like they both would make us stronger. But in different ways… maybe?" Xiao Dan asked, sitting down on the other half of Lei Jin's Lap. 

"It depends. But they do have very different functions. First the more concentrated your strength is, the more potent it will be. Thus making you stronger. This is where the rules come into play. However, the outside most layer doesn't need to be complete. And generally speaking the more worlds you have the faster you will get stronger. This is the function of the final layer. For you I would recommend just adding worlds to a new layer instead of changing the rule you go by." Lei Jin answered their questions with a fatherly smile. 

"Then we will listen, father. We will focus on adding new worlds and do our best to learn how to craft the Artifact Worlds." The twins said with big confident smiles. 

"Good, now pay attention. I'll do it as many times as needed. But it's best if you learn it as fast as you can. And remember it is acceptable if the two of you would have to work together to pull it off. That way you can learn from experience. And you have my entire inner domain of worlds as a reference." Lei Jin explained, before he tossed out a few Artifact worlds. Stretch a palm out pulling out a few sets of resources and surging the World Force. In a matter of just a few breaths he created a few Artifact worlds. 

The girls were in amazement. And Lei Jin continued to demonstrate, explaining more and more after each and every refinement. Xiao Ling and Xiao Dan were absolutely loving it. Eventually they got the urge to try it themselves. First as a team. And made sure to keep an eye on the example that their father showed, time and time again. It took a long time for them to understand the process but once they did the two of them pulled it off. 

"Excellent job girls! Now keep practicing until you can craft them on your own. You can try rotating who leads so you can slowly grasp the full process." Lei Jin said.