Who accomplished the most, Bing Shi or Dai An? Dai An weakened her soul, yes, but just like a person who after going blind would have their sense of touch and hear enhanced, Bing Shi had to learn how to work with the things that she was left with.
To think that she wanted to jump into nanobiotechnology at first but her soul stopped herself, might have to do something with her past experiences of craving too many answers. Her insufficient brain capacity wasn't enough to do it on her own but was sufficient enough to come up with an improved plan.
If anyone thought that Bing Shi was the weakest among her lifetimes, she would prove everyone wrong with how she was the only one to get herself a walking encyclopedia that could beat Google on all levels. Who was so stupid as for avoiding Xuan Mu now, huh? Ting Zi? Dai An? Xue Bi?