" Hawthorn Tree Love " was a novel about a pair of young lovers from falling in love to breaking up. It was regarded by many readers as one of the cleanest love in history because it portrayed pure, sincere, selfless love without any utilitarians, impurities or hypocrisy. In the novel, the relationship between the male protagonist Dou Wei and the female protagonist Mei Ting was very pure. They loved each other but could not be together for various reasons. They shared every bit of life together, supported each other, understood each other, and cared for each other. They never hid each other's feelings and thoughts. There was no third party or deception in their love. There was no utilitarian motive or hypocritical performance. The characters in the novel were also very full and real. They not only had young passion and dreams, but also mature, deep thinking and values. They didn't have complicated family backgrounds or conflicts of interest. They respected each other and never forced each other to do anything they didn't want to do. " Hawthorn Tree Love " also depicted a selfless dedication and sacrifice. The male protagonist Dou Wei could give up his ideals and pursuits for the female protagonist Mei Ting, while the female protagonist Mei Ting could give up everything for the male protagonist Dou Wei. This kind of mutual support and mutual sacrifice of love showed the best side of human nature and was one of the cleanest love in history. To sum up, the reason why " Love Under the Hawthorn Tree " was called the cleanest love in history was because it portrayed a pure, sincere, and selfless love without any utilitarians, impurities, or hypocrisy. At the same time, the characters in the novel were very full and showed the best side of human nature.