Chu Yunfan immediately understood why such a dangerous person had not been and was still alive.
The reason was simple. They probably wanted to find out the secret to immortality.
Gao Tenglong had a fortuitous encounter when he was young, which was why he had been able to live from the early days of the Federation up to the present. Even in the present era where the lifespan of humans had been greatly increased, it was still an incredible miracle.
The average maximum lifespan was one hundred and twenty years. This was the limit that current life science could achieve. In theory, the number of cell divisions in a human could only support a human's life up to one hundred and twenty.
Of course, this was only in theory. In reality, there were not many who could break through or reach this age. Most of those who did were martial arts masters. Although the number of times human cells could divide was limited, the time of each division could be delayed.