Pu Tao in the poem is wine. Throughout the year, grapes and wine are mellow, and the guests holding glass glasses at the banquet are old friends. This poem depicts the life of those dignitaries who enjoy grapes and wine all the year round. Lu Ji, the author of this poem, was a famous writer and calligrapher in the Western Jin Dynasty, and the grandson of Lu Xun, a famous minister of Soochow in the Three Kingdoms period.
Bamboo leaves are even green, and Pu Tao is red. -Don Wang Ji's Five Poems "Eating Out"