Yam was the male lead in many Cantonese opera stage productions, in Macau initially and in Hong Kong since 1945, opposite many actresses, including Sheung Hoi Mui (上海妹), Che Sau Ying (車秀英), Tam Lan Hing (譚蘭卿) and Tang Pik Wan (鄧碧雲). With the 1942/3 financial help from Mr. Ho Yin, father of Edmund Ho, she formed a new opera troupe called New Voice Opera Troupe (「新聲劇團」) with manager (徐時), librettists (徐若呆/歐陽儉) and the following performers who joined the troupe one at a time:-