This was the set up that players usually followed in a dungeon.
When they come across a new monster, they would send someone to scout it out and come back with some information in order to come up with the right way to deal with it.
Lu Li did not stop him because he was confident in his teammate.
Losing him would impact the dungeon run negatively, but he trusted in Cain's Left Hand's mechanics and game sense. In Ruling Sword, Cain was arguably within the top 3 Thieves in the guild. There were only a few that were better than him and they would constantly practice against one another to determine who was on top.
Since Lu Li was the number one Thief in the game, many of the top Thieves joined Ruling Sword to train under his guidance.
Cain's Left Hand aggroed the monster and stopped in his tracks as a few spears were thrown towards him. He also noticed that there were a few spears that had flown right past.
