Please tell me your understanding of this couplet.

This elegy expresses the author's deep memory and respect for an old friend. The book "The most rigorous writing style, not the history of China's novels" written by the first couplet is a praise for the academic achievements of old friends, which shows that old friends have high attainments in the academic field, not only have in-depth research on the history of China's novels, but also the last words of the second couplet are too painful to be an empty-handed writer, expressing deep regret for the deceased, and also reflecting the author's cherish of the last words of the deceased, hoping to pass on his academic achievements and wisdom.

By praising the academic achievements of the deceased, the whole elegiac couplet expresses nostalgia for the deceased, conveys a kind of respect and respect for academics and the deceased, and encourages people to pass on their knowledge and wisdom.