Since 1994, the Evangelical Lutheran Church of Hong Kong has run the "e;Daddy-Long-Legs Mailbox"e; service, counselling children and teenagers from the third grade of primary school to middle school via letter writing. So far it has received over 51,000 letters, each one full of genuine hope and emotions of children.As the service is going to celebrate its 20th anniversary, it selects 47 letters from children as well as responses and analyses of 10 experts on children and teenager counseling and family education. From the letters we can glimpse their inner world and be better equipped to solve growing up problems as parents.