Despite becoming an immortal just recently, Bai Ning Bing had some advantages over normal Gu Immortals.
First of all, she possessed one of the ten extreme physiques, Northern Dark Ice Soul Physique, which was the best for cultivating ice and snow path. Similarly to Hei Lou Lan's Great Strength True Martial Physique, her dao marks surpassed most rank six Gu Immortals in the same condition.
Secondly, she had become the owner of Bai Xiang grotto-heaven. She obtained Bai Xiang's true inheritance, and had all the Gu worms left behind by Bai Xiang, among which were rank seven Immortal Gu as well!
However, there were no rank eight Immortal Gu.
Bai Xiang's status in history was slightly inferior to Hei Fan. But the joint forces of the five Xiangs surpassed Hei Fan by a lot.
Bai Ning Bing's flaw was that she was not familiar with the Immortal Gu and the immortal killer moves, she often failed when activating them, which caused danger of backlash.