This is related to China's moral value orientation. In China, kissing between men and women is a private matter, which should be done in private. It is against public morality to do it in public. This is the difference between the East and the West. When in Rome, do as the Romans do, and follow China's moral value orientation in China.

Moral value orientation refers to the moral values that always point to personal moral cognition and moral behavior, which is closely related to specific moral behavior and points to certain moral goals. ?

Moral value orientation can be classified from different angles. Coleman divides the moral value orientation of children and adolescents into three levels: individual, society and principle from the perspective of moral cognitive development. Gilligan found that human society and individuals have two different value orientations: "justice" and "care".

Hoffman is divided into humanitarian and routine. McKinney pointed out that the moral value orientation of college students can be divided into two types: rewarding good and punishing evil. It is found that the individual's moral value orientation is closely related to the parenting style, which can well predict the occurrence of individual moral behavior.