The Most Powerful Black Technology in the World

What is the end of technology? No one has been able to give the answer for thousands of years. Cultivation of immortality must be more powerful than technology? Even if it is a spell that destroys the world, can technology have a countermeasure? Zhao Yao didn't know the answer in the past, but after obtaining the system, Zhao Yao went further and further in pursuit of the answer.