Is Jia Baoyu's poem in memory of Qingwen the longest poem in "A Dream of Red Mansions"?

Yes.

"The Elegy of Lotus's Daughter" is a memorial poem used by Jia Baoyu, the protagonist of "A Dream of Red Mansions", to pay homage to his maid Qingwen. It is the longest poem among all the poems and verses in "A Dream of Red Mansions".

In this edict, Jia Baoyu uses fiery emotions, vivid metaphors, and vivid narratives to recall that when Qingwen was alive, gold and jade could not describe her noble character, and crystal ice and snow could not describe the depth of her heart. Pure, the stars, the sun and the moon cannot compare to the brilliance of her wisdom, and the spring flowers and autumn moon cannot compare to the beauty of her appearance. Therefore, sisters admire her elegance and slaves admire her wisdom. Jia Baoyu used the most beautiful words to enthusiastically praise this maid who was forced to die with "a heart as high as the sky and a lowly body". He recalled with infinite regret the relationship between himself and this maid in the past five years and eight months. Living and traveling around, at the same time, he denounced and scolded those in power and those despicable slaves who caused tragedies with extremely passionate language.

The entire story of "Elegance of Furong's Daughter" is full of literary talent, sincere emotions and profound implications, fully reflecting the author Cao Xueqin's unparalleled literary talent.

The achievements in poetry and prose represented by the work are not inferior to those of the best mourning literature in China