The arrow is on the string. What are the arrows of the three brothers and sisters? What are their respective roles?

The whistling arrow of my sister's first flight (it will be accompanied by whistling when it is launched, which has dual functions of attack and alarm, and is characterized by accuracy and speed)

Sister Er Hang's butterfly dance arrow (flying objects can be specially set up, and the archery is light and blooming around, which looks like a flying butterfly).

The armor-piercing arrow of Xu Jingchuan, the younger brother of Yihang Airlines (powerful and accurate, can penetrate several obstacles)

Not much to say, the topic of answering your question is very clear. Hope to adopt.