Three-quarters of them served in Hong Kong. About one-quarter served in Mainland China or overseas. About 140 served in Cambodia, Vietnam, Myanmar or Rwanda.
There is a photo exhibition on campus on what they have done.
Some have taught English. Some built solar panels to charge batteries. Some wired houses for LED lighting. Some inspected eyes. Some designed fashion for people recovering from mental illness. Some taught secondary school students to build robots. Some taught young people to write smart phone applications. Some did health checks for the elderly. Some helped the handicapped to rehabilitate. Some helped slum dwellers to eat healthier. And a lot more.
Come to see them for yourself.