AB system of love (Love AB System), that is, boys and girls in love in some cities, began to implement unequal payment system when paying for love consumption. In short, when paying the bill, boys pay most of the expenses and girls only pay a small part. As for the specific payment ratio, it depends on the actual situation. The appearance of Love AB System is the embodiment of the diversity and progress of love concept in contemporary society. Love AB System originated from AB system in Love AB System, which was originally a drama term and later evolved into a film term. In the past, when a troupe rehearsed a play, the same main role was often played by two actors. During the performance, if the A angle can't be played, change it to the B angle immediately. Sometimes Angle A and Angle B will rotate in different games. This arrangement is called AB system. Then it appeared in the process of shooting, and the word also evolved into "double body", which means that in order to speed up the shooting progress, the director often arranges two groups, A and B, to shoot a play at the same time. For example, the style in Body Art body double is to shoot panoramic scenes or scenes with background for the protagonist, and of course, there are martial arts, broadness and anger in Body Art body double. The current AB system is a popular consumption mode among fashionable young people, that is, on the basis of "AA system", when spending, men pay most of the expenses and women pay a small part. Now, this word has traveled through time and space and has become the object of hot discussion among young people. It has also been given a new meaning, and the definite article "love" has been added in front of AB system. With the popularity of AB system, a new concept of urban love is gradually derived: Love AB System. Love AB System's viewpoint supports 1. In modern life, women are economically independent, and people with independent personalities are no longer vassals of men. Women have the same decision-making power as men in love, including the right to pay in love consumption. 2. Love AB System not only tells how to pay money, but also tells the love view of the times. If both men and women think of each other, it is easy to say who will pay and how. Love is a matter for two people, as long as two people in love are happy, as long as it is conducive to their love to thrive! Objection 3. How can we live if we divide the money so clearly now? Every penny can't be divided so finely. You don't want to give everything, so we women must be like men. What's the big deal? 4. Are women inferior to men? I advocate that the active party in love should pay. This is the fairest! You see, both of them are dawdling around with some money, and then blink to settle accounts. Who pays a few cents? What a scandal. Experts in Love AB System believe that AB system is the embodiment of the diversity and progress of love concept in contemporary society. The equality between men and women in modern society requires women to have the same decision-making power as men in love. They even think that paying their own money is a manifestation of their ability. They are financially independent and will not be attached to men. Therefore, it is good for men not to be sad. Reducing the economic burden for men is also a woman's care for men. As for the future development trend of AB system. I think, as a concept of consumption in love, no matter how it changes, its premise will not change, that is, the love of two people and the love of soul mates! -Professor of Sociology You Gong Li [1]