The Guard Tower has these specific characterisitics.
In order to Assemble the Guard Tower, Guard Tower Kit and specific items are needed for it to be assembled. The Kit can be obtained though the NPC merchants, and Jewel Items can be earned through processing items or through trading with other users
Move to a place where a guard tower can be assembled and right click on the Guard Tower Kit (that is in the inventory). The assembling section will look like the Guard Tower Kit and the Guard Tower will soon be assembled. At most the user can build 6 Guard Towers.
The Guard Tower will turn into its finished state once the assembling has been completed. The Guard Tower has a given firing range and it will only attack incoming enemies or enemies that the user is attacking. When the user (that has built the Guard Tower) logs out of the game, the Guard Tower will be automatically be dissembled and return to the user’s inventory as the Guard Tower Kit.