Although if an ambush were to happen, it would definitely not penetrate through the successful secrets of the realm, with Taichu Zhenren guarding here, there is no possibility of a successful ambush, but one must always prepare for the unexpected.
If the ambushing foreign creature is very adept at ambushes, then everything will be different. At that time, it could very likely cause a large number of casualties, and once there are mass casualties, it will heavily impact everyone, because they can no longer bear significant losses, and if there's even a single casualty, it would severely affect everyone's mood.
And such a hit would be heavy, possibly causing everyone to lose confidence in what lies beyond the wall again, since the previous incident is still fresh in everyone's memory. If casualties occur again at this time, it could very likely make everyone turn back to the inside of the wall, never mentioning outside matters again.
