As his life was in the hands of Lin Feng, there was nothing Gao Fan could do other than to divulge the truth about the Secret Manual of Kun Peng.
The secret manual of Kun Peng was hidden in the North Polar Sea and was enclosed by sealed all-year by thick layers of black ice. Despite knowing its location, as well as possessing a magic item that could activate the manual, he did not know how to crack the black ice.
Fortunately, due to the wheels of fate, the dark ice would be eroded every few years by positive yang energy and become weak.
This would last until the positive yang in the North Polar Sea ran out and the negative yin energy regained the upper hand. Only then would the black ice become strong again.
However, even if one managed to weaken the black ice, it was still difficult to access it.
If one wished to destroy the many layers of black ice, one would need require a firepower akin to one of the Seven Legendary Primordial Fires or to bash through it.