ZHENGZHOU, CHINA—Xinhua reports that a trench estimated to be 6,000 years old has been found in central China at the Suyang site in the ancient capital city of Luoyang. The trench was walled with wooden posts and is thought to have been built for defense by the people of the Yangshao culture. Archaeologist Ren Guang said that layers of artifacts found in the trench indicate that it was later used for domestic waste. Pottery and artifacts made of stone, jade, bone, shells, and burned corn and millet seeds were also recovered at the site. To read about another find from Luoyang, go to "Around the World: China."