Since the early twentieth century, Hong Kong has always been an important venue for Cantonese opera development. After 1949, as a result of political turmoil in the Mainland, performers and troupes converged and resettled in the territory, leading to a tremendous prospering of Cantonese opera in the subsequent decade. This development is linked intimately with the rise of the electronic media.
Performers and troupes began to grasp the possibilities offered by film and radio to re-examine age-old performance practices with regard to acting, singing, script writing, instrumentation, and stage set-up. They brought in novel elements from the theatre and movie world, and participated in the production of films and records. With these acts, they are extending the movement to modernize Cantonese opera that began in the 1930s.
Wong Jum-sum was thoroughly immersed in the world of Cantonese opera from young. Through his close encounter with master performers like Hung Sin-nui, Ma Si-tsang, Yam Kim-fai, Pak Suet-sin and Tong Dik-sang, he witnessed first hand the modernization of Cantonese opera, and was mightily moved by the adventure and passion he saw.

The first song-plus-lyrics Wong Jim ever wrote. The song, sung in Mandarin, was created in 1965, but only saw daylight in a record in 1972. The singer, Wa Wa, came from a renowned singers family and joined the music industry when in her teens. She married Wong Jim in 1967.
作曲:黃霑
作詞:黃霑
主唱:華娃
我和你偶然的相遇
為什麼會生情意
難道人生真是一個謎?
沒有人知道謎底?
說不盡無限的心事
解不明無盡情意
只因為人生本是一個謎
沒有人知道謎底?
明明是不能也不應該愛你
心中偏不願這樣便忘記
旣然是天意要我倆相遇
為什麼分?
為什麼要離?
此後那無限的心事
還能對何人說起
從此我一生永遠有個謎
謎底是我愛你!
此後那無限的心事
還能對何人說起
從此我一生永遠有個謎
謎底是我愛你!