Picture taken on Dec. 11, 2018 shows specialists working at the foundation of a Neolithic house in the Dahe Village relic site museum in Zhengzhou, capital of central China's Henan Province. The foundations of a Neolithic house that has stood for over 5,000 years in central China's Henan Province will be examined and reinforced 46 years after they were unearthed. The four-bedroom house is part of the Neolithic Yangshao culture, dating back 7,000 years. (Xinhua/Li An)