China's Twenty-four Solar Terms, a knowledge of time developed through thousands of years of observation of the sun's annual motion, has been nominated for the 2016 Representative List of the Intangible Cultural Heritage of Humanity.

The nomination was announced at the 11th Session of UNESCO's Intergovernmental Committee for the Safeguarding of Intangible Cultural Heritage, which opened in Addis Ababa, capital of Ethiopia, on Monday.

Bringing together nearly 650 delegates in the East African nation from Monday to Friday, the meeting is to focus on traditional songs, rituals, celebrations and know-how.