I lost my mum i have her pport number please help? i lost her from 17 years i have her pport number and?

iam keith ho mun seng ,i born in singapore in 1,3,1992 my mom chenese and my dad lebanese !! i came to lebanon with my dad and with my mom my mom left me in lebanon and she gone , after 4 years my dad die and i still in lebanon and now iam 18 years old i need to know my mom i have her number pport wath i chould i do?? if i gone to chinese embusy can they give me a information about she or what i should i do?? help