In the dangerous wilderness, even an experienced leader like Zhang Yanfeng could not afford to let his guard down, let alone the younger ones of Wang Yan's kind.
Before the magical era, humans already feared wolves, bears and venomous animals. Sometimes wolves were incredibly persistent. Zhang Yanfeng once encountered four wolves following closely behind them for 12 days straight, causing everyone to tremble in fear the entire time. To make matters worse, these animals would not attack unsolicitedly. Instead, they simply followed you, keeping you on your toes all the time.
In such cases, the best shot to survive was to study the weaknesses of those beasts. In fact, their greatest weakness was fatal injuries. Without medication such as antibiotics, infected wounds could be lethal for wolves. Therefore, they valued every chance of attack.