Vocal style in Cantonese opera is personal, the brand, the signature, of performers, that they decide to teach/share for a fee or otherwise. Yam shared with only Loong how to use the mouth and surrounding cavities as an instrument while others learnt to sing like Yam directly or indirectly. According to herself, Yam was a home body who needed only 3-meals a day, sleep and mahjong solitaire to make her day since retirement. Actually, she was alone often photographed guiding Loong and others or talked to her buddy Leung Sing Bor during rehearsals in 1970s or others in the troupe since his death.