South-South Cooperation, is the economic and technical cooperation between developing countries (because the geographical location of most developing countries are in the south of the major developed countries, therefore the economic and technical cooperation between the developing countries is called "South-South Cooperation"). It is an important part for promoting development and international multilateral cooperation. It is an important channel of developing countries for self-reliance and progress. It is also an effective way of developing countries for participating the world's economy.
Nán-Nán Hézuò, shì fāzhǎnzhōng guójiā zhījiān de jīngjì jìshù hézuò (yīnwèi fāzhǎnzhōng guójiā de dìlǐ wèizhì dàduō wèiyú zhǔyào fādá guójiā de nánfāng, yīn'ér fāzhǎnzhōng guójiā zhījiān de jīngjì jìshù hézuò bèi chēngwéi “Nán-Nán Hézuò”). Tā shì cùjìn fāzhǎn hé guójì duōbiān hézuò de zhòngyào bùfèn. Tā shì fāzhǎnzhōng guójiā zìlìgēngshēng, móuqiú jìnbù de zhòngyào qúdào. Tā yěshì fāzhǎnzhōng guójiā cānyù shìjiè jīngjì de yǒuxiào shǒuduàn.