In order to improve the combat effectiveness of the offspring, some indigenous people conducted physical fitness tests on newborn babies  They put the newborn babies in a harsh natural environment to test their vitality  Abandon the weak and poor-tested babies, and keep strong ones
This method did not make the local indigenous people powerful and prosperous, but declined
 Physiological quality is only part of the overall quality of people, and the national security requires the improvement of people's overall quality