Half-life has become an independent science. Who is the pearl with nowhere to sell at the bottom of the pen, and who is the wild vine?

Half-life has become an independent science. There is nowhere to sell pearls at the bottom of the pen. Among the wild vines are ink grapes written by Xu Wei in the Ming Dynasty. This is a poem about ink grapes written by Xu Wei, a great calligrapher, dramatist and strategist in Ming Dynasty. This poem expresses the poet's miserable mood all his life, so as to express his sigh over his unpaid ambition in life.