Soon after the Archer King entered the herbal garden, all the Demon Kings from the nearby regions gathered and planned an ambush.
All of them were aware of the Archer King's great prestige. It didn't take them long to realize that the one who kills this Archer King would gain a fantastic reputation. The Demon Kings required this reputation if they wanted to advance further in their cultivation.
Moreover, all of them were also aware of their limits. They couldn't actually defeat the Archer King in a one-on-one battle. They had to ambush him collectively, or else they might even lose their lives.
The last time the Demon Kings underestimated a King-Ranked Warrior was when the Vicious Lightning Paragon entered the third layer and slaughtered several Demon Kings.
The Demon Kings even set up some arrays. They included formations associated with spatial laws.