looking for 伍焯珍 (Ng Cheuk Chun or WU Zhuo Zhen)

I am looking for my aunt 伍焯珍 (Ng Cheuk Chun) and her family (Li Ming, Danny Li and her granddaughter Celina).

My aunt Ng Cheuk Chun moved from Hong Kong to Canada on October 23, 1976, and she was living at 3228 Adanac Street, Vancouver B.C., V5K 2P1, Canada. (Phone at that time: 254-4444),She married with LI Ming.
The last time we received her news was in 1987.
Her sister is 伍焯群 or NG Cheuk Kwan. In 1975 she was living at 50 HO TIN VILLAGE, SIN HOI, CASTLE PEAK, New Territory, Hong Kong. His brother is 伍坤 or WU Kun. He was living in Guangzhou, Guangdong Province, China.