Ma Sze Tsang formed the first Hong Kong troupe with both actors and actresses in 1933. Records show Yam's all-female troupe was the last one still doing well in theatres since then. For ten years (1935-1945), Yam made Macau her home, when her hometown in Guangdong fell to the Japanese during the Second Sino-Japanese War. Meanwhile, she moved her family, including her (Chinese custom, actually paternal first cousins.) younger sister Yam Bing Yee () into her new home in Macau. Occasionally, Yam in 1939 renamed that same all-female opera troupe (「鏡花艷影劇團」/高陞戲院/紫雲霞/《夜出虎狼關》郎紫峯=郎筠玉) to perform in Hong Kong or in 1942 travelled to perform in Guangdong with Hung Sin Nui's Sifu (何芙蓮) as the co-star. Hung met Yam that year.