Yuan Xiaoyi, a student volunteer, with one of the children she teaches in Kenya.[Photo/Provided to China Daily]

Depressed by the conditions, Yin, who was majoring in architecture, decided to transform the ramshackle school. With the help of social media, he and three other Chinese students raised 70,000 yuan in a week. They used the money to redesign the building－they purchased construction materials, guided workers with limited construction experience and built a brand-new school.

The new facility won acclaim from the local community, and when someone asked Yin why he hadn't made school renovation a long-term project, he decided to launch the Dream Building Service Association.

The association raised a further 270,000 yuan and rebuilt a second school in 2015. Last month, it partnered with Deng Fei, who started the Free Lunches for Children in Rural China program, to provide meals for 1,103 students in five schools in the slum. They plan to expand the project to other schools in Mathare.

In addition to building schools, the association has organized talent shows, art exhibitions and soccer tournaments to enrich the children's lives. Last year, a soccer tournament attracted 600 students from 20 schools, and more than 1,000 children displayed their works of art at an exhibition organized by the association, which is attracting a growing number of Chinese volunteers.

The association now has five full-time employees in Kenya, and about 70 volunteers arrive from China to help every year. A further 69 contribute via the internet, according to Yin.

Other young Chinese have also rolled up their sleeves to help people in Kenya. Yuan Xiaoyi, a 21-year-old student at New York University, and three other female Chinese students founded an NGO called Care for All Kids after Yuan volunteered to work in the country in 2013. The organization provides low-cost training for teachers from "informal", or unofficial, schools. Last year, the NGO organized training for teachers at more than 120 schools in Kenya.

Meanwhile, Zhang Chi, 22, an architecture student at Yale University, collaborated with refugees to set up a school when she volunteered to work in Kakuma, the largest refugee camp in Kenya.

"We want to inspire more people through the work we do. Many young people in China are eager to engage in international development－they just need a channel to begin," she said.