In the game "Dragon Creed", when using the arrow, aim at the dragon and use it when the dragon gives a choice. The role of knowing the arrow is to increase the player's heart rate and increase the probability of triggering crit in combat. You can only buy one arrow a week, which can be bought in prop shops and businesses in the main city The specific usage will vary depending on the game version and settings. For more details, please refer to the in-game guide or consult other players.