These new guys were at the peak of the Great Boundary Ascension Realm, just one step closer to becoming Fake Gods.
In fact, if things didn't go awry at least one of them would reach the Fake God Realm, and why not try for the fabled God Realm.
The problem wasn't only these 2 Ancestors of the Tang Family though, but the number of experts behind them.
After all, Tang Family had one way, or another taken into their hands more than 20-30% of all the resources that Huaxia could provide yearly for a long time.
Even though they had to share their mountain with existences like the Yao Family, and the government, they had still received quite an amount of resources for years, continuously.
Not to mention their Holy Grounds, their research in science, and the human body. They must certainly have their own ways and methods to create more and more experts.