《爱情是什么》是一部非常经典的韩国家庭剧，由朴哲执导，李顺载、金惠子等主演。该剧讲述了由两个截然不同的家庭联姻而产生的故事。一边是传统保守的旧式家庭，一边是现代民主的新式家庭，两个家庭在不同的文化背景下，因为孩子的婚姻联姻而开始探讨爱情和婚姻的本质。

《爱情是什么》在剧情和风格上，呈现出了强烈的现实主义风格，将社会的生活态度和人们的心理描绘得非常真实。它挖掘了婚姻中的矛盾和冲突，同时也探讨了家庭、爱情、人性等方面的关系。

除此之外，该剧的演员表演也十分出色，李顺载、金惠子等演员在对角色的把握上，表现得都非常到位。他们生动而逼真的演绎，让观众在剧情发展中能够更加深刻地理解人物性格和思想。同时，剧中的音乐、服装等等细节也十分出色，为观众营造出了细腻而真实的情感氛围。

"What is Love" is a very classic Korean family drama, directed by Park Chul, starring Lee Soon-jae, Kim Hye-ja, etc. The play tells the story of the marriage of two very different families. One side is a traditional conservative old-style family, and the other is a modern democratic new-style family. Under different cultural backgrounds, the two families began to explore the nature of love and marriage because of the marriage of their children

In terms of plot and style, "What is Love" presents a strong realistic style, integrating social life attitudes and people's Psychology is depicted very realistically. It excavates the contradictions and conflicts in marriage, and also explores the relationship in family, love, human nature and so on.

In addition, the performances of the actors in the play are also very good. Actors such as Lee Soon Jae and Kim Hye Jae are very good at grasping the roles. All performed very well. Their vivid and realistic interpretations allow the audience to have a deeper understanding of the characters' personalities and thoughts during the development of the plot. At the same time, the music, costumes and other details in the play are also excellent, creating a delicate and real emotional atmosphere for the audience.