Secret of Heaven

[500,000 Karma Points for now, the price becomes higher as you become stronger as the process is more difficult… You are also required to possess the Ultimate Blood Essence of a Divine Beast or Primordial Beast. The cultivation you get will be equivalent to the cultivation of the Beast's Ultimate Blood Essence.]

System's answer made Qin Yuan almost cough.

It's practically too expensive.

Moreover, he still had to obtain the Ultimate Blood Essence.

It wasn't difficult but for the Tenth Stage one, he might have to kill the Primordial Azure Dragon, the Golden Lion King, or the Phoenix Queen.

Of course, he wasn't so evil as to kill other people for no reason.

And can't choose randomly because he doesn't want to be a certain animal.

'Eh, wait, there are some Beast corpses in the Hidden Heaven, there might be some good ones in there.' Qin Yuan suddenly remembered the dozens of corpses that were in Hei Hou's territory.