Editor's note: To mark the convening of the 20th National Congress of the Communist Party of China, China Daily has selected 10 sets of photo stories that illustrate various aspects of the country's development during the past decade. The photos, posters and videos showcase the achievements and experiences of the Party's cause and the country. This is the fourth in the series.

Yunnan province is home to many ethnic groups, including the Derung, the Jino, the De'ang, the Achang, the Blang, the Pumi, the Jingpo, the Va, the Lahu and others with small populations.

In recent years, water, electricity, roads, communications, the internet and other types of infrastructure have been significantly improved in ethnic group areas with small populations in Yunnan. More than 27,000 poor households have been relocated, students from poor families can learn and study well, and all the people can afford to see doctors.