Mother's Song at the Eightieth Birthday Celebration!

They are preparing for an eightieth birthday celebration. They look back on the years gone by. Liberation came, interethnic wars raged, and they had to work hard to escape poverty. Eventually, they succeeded in industrialization and joined the ranks of advanced nations, but they couldn't avoid the creation of victims due to excessive competition. The grandmother's eldest son left home long ago, and there's been no news of him. Can the grandmother see her son at the eightieth birthday celebration?"