In Sichuan and Chongqing, it is also called "Tear" or "Twist" ("Twist" KA, four tones), and in Hong Kong it is "A" in Taiwan Province Province. Later, a variety of dragging people on bushes by friction was developed, which was called "mowing grass" in Hongkong and "flying on grass" among students in Taiwan Province Province.
Aruba is a boy's game. Many students lift a boy up and rub his genitals with hard objects, including rubbing against posts and trees.
Extended data:
Mill column culture was very popular in Hong Kong universities in 1990' s, especially as an important activity of orientation camp. It is rumored that the University of Hong Kong called "con You" when it was a "liar" in the 1990s. In fact, it sounded similar to "Kong U" (the popular abbreviation of the University of Hong Kong), so culture once flourished in the University of Hong Kong.
A few people apply this game to two unfamiliar students of the opposite sex, which is similar to simulated sexual intercourse. Some students were criticized by their seniors as "uncooperative" and "bad attitude" because they refused to participate in related behaviors.
Some students give in because they can't resist peer pressure, causing psychological trauma. Moreover, college students in this era are extremely open in sex. Some people point out that it is because of this fence-grinding culture. Therefore, this kind of activity has been criticized by some people.