Apart from the top three pills, a pill that also caught Zhao Fu's eye was the All Poison Divine Pill. The art of poison was incredibly mysterious and difficult to defend against, and even Emperors feared such a thing. As such, all Emperors had some way of defending against poison.
With the All Poison Divine Pill, Zhao Fu would be immune to all sorts of poison in the future, which would be quite good. There would definitely be people wanting to use poison against him in the future, so it would be good to have such a thing.
Apart from the All Poison Divine Pill, the Vermillion Bird Blood Pill was also quite good because it allowed one to have the Vermillion Bird's Bloodline. The Vermillion Bird was one of China's four holy beasts, so its power was definitely quite great.
Because the Vermillion Bird Blood Pill was ranked sixth, it was most likely not too powerful but also not too weak.