It must be a dream of red mansions, there is no doubt about it. As for the Tale of Genji, I think it's just so-so. Generally speaking, one feeling is that the relationship between the characters is too chaotic.
First, it is regarded as a dream of red mansions in Japan, because the relationship between characters is complex, and there are as many as 400 characters. But as far as its artistry is concerned, I don't think it can be compared with A Dream of Red Mansions at all. First of all, we can't understand the poems in it. It may be excellent, but because of the relationship between culture and translation, I can't understand it, so it's not necessarily that the book is bad.
Second: the plot is too chaotic. At first, I thought The Tale of Genji was like a diary of our youth. The whole story tells the story of the protagonist Guangyuan's contacts with countless women such as Kwai Ji, Barnacle, Akashi Ji, Long Moonlight Night, Sunset and Liudaoguan. Compared with Jia Baoyu, I think Guangyuan is very promiscuous. Therefore, I think Guangyuan lacks Jia Baoyu's personality charm. Although there are many female characters, it is difficult to distinguish them after reading them, because I don't think they have the female personality in A Dream of Red Mansions. Even the little maid in A Dream of Red Mansions has its own uniqueness, but The Tale of Genji is far from reaching this level. Even the characters with different personalities in Jin Yong's novels have their own characteristics, so I think the Tale of Genji is called.
Third, there is no specific description of the characters' hearts, and the descriptions of the characters' language, movements and expressions that we often see in the study of A Dream of Red Mansions are very lacking in The Tale of Genji. The whole story is about the plot, so I often forget the front after reading The Tale of Genji. I think he lacks the coherence and necessary connection of the plot, and many plots can be changed back and forth.
Fourth: I think the abnormal plot in Japanese literature seems to have existed since ancient times. There are countless incestuous plots in Tale of Genji, which makes it difficult for me to understand Guangyuan's feelings for Sharla Cheung. He quietly brought her home to raise her when she was a child, and devoted a lot of care and love to her. But if he really likes Zi Shang, why does he always associate with many women while getting and later? Anyway, I don't understand these strange feelings in Japanese literature.
The above is my humble opinion on Tale of Genji, which may not represent the views of many readers.
In a word, I think the Tale of Genji is average. Perhaps it is because of the small amount of Japanese literature that it is great to publish the long Tale of Genji.