Shen Fei paid no mind to Babata's attitude. Although she wanted to rebuild and strengthen the Yunmo Star Lineage, this world was unlike others, where taking in large numbers of disciples was essential. A single sufficiently powerful figure could make an entire lineage flourish, just like those Universe Kingdoms, whose founding rulers were almost all still around.
Aside from that, however, there was another, more important reason: the resources Huyan Bo had left behind were only enough to nurture one disciple. If there were two, those resources might not suffice. The four hundred or so Muya Crystals Shen Fei had obtained might seem like a lot, but they really were not.
Muya Crystals were tremendously useful at the Apprentice level. For an intermediate or Advanced War God, a single crystal was enough to produce a Planetary-level expert. But their effects diminished considerably for those already at the Planetary level, especially in its later stages, at the eighth or ninth level. Once someone reached the Star level, their effectiveness would decrease even further.
In this world, talent mattered, but resources mattered just as much. Luo Feng's early rise had depended entirely on Meteor Star. Without Meteor Star, he would never have been able to rise while on Earth. Fortunately, he later happened to encounter the Genius Battle, which completely resolved his resource problems.
Of the trio of Luo Feng, Hong, and Thor, Thor barely appeared in the later parts of the original story. That certainly had something to do with his talent, but resources were also a major factor. Luo Feng and Hong had risen with the resources of the Virtual Universe Company and the Giant Axe Fighting Arena respectively. Thor had received no such treatment. His old friends Luo Feng and Hong would support him, of course, but there was