The reason Duan Lingtian asked which individuals within the Pig Demon clan possessed the highest innate talent was precisely because he wanted to achieve his goal in one giant leap: by devouring high-grade talent spirit roots, he could directly make a run for the "black spirit root"!
Doing this would save a great deal of time.
If he were to devour the low-grade talent spirit roots of ordinary Pig Demons, even though his own talent spirit root would eventually transform into a "black spirit root," the process would be extremely protracted and require a vast amount of time.
Chapter 2252