Who are the four families who helped the poor in 23 years?

"Four-ethnic poverty alleviation" refers to the poverty alleviation policies implemented by the people of China and the government of China for the four ethnic minorities of Yi, Bai, Dai and Hani in poverty-stricken areas. This policy is mainly aimed at poverty-stricken areas in Yunnan Province, aiming at helping local ethnic minorities get rid of poverty and become rich. This policy mainly involves the following aspects:

1. Policy support: The government provides financial, technical and policy support to ethnic minorities in poor areas to help them develop their economy and improve their living standards.

2. Resource integration: The government integrates resources, improves infrastructure in poor areas, and improves local living standards and environmental quality.

3. Cultural protection: The government strengthens the protection and inheritance of local minority cultures and helps them maintain their traditional culture and lifestyle.

4. Education and training: The government provides education and training opportunities for local ethnic minorities to improve their culture and skills and help them better integrate into modern society.