The Foundation (決戰玄武門, literally translated as "Decisive Battle of Xuanwu Gates") is a TVB television series, premiered in 1984. Theme song "In Dream Several Sorrow" (夢裏幾番哀) composition and arrangement by Joseph Koo, lyricist by Wong Jim, sung by (鮑翠薇), and the sub theme song "I Cannot See My Tears Flow" (不見我淚流) composition and arrangement by Joseph Koo, lyricist by Wong Jim, sung by .