The Great Wall ruins of the ancient Chu state are seen in Yexian county, Pingdingshan, Central China's Henan province. The province's cultural heritage bureau said on March 8 that they have found what was called the "Father of Great Wall" – the Chu Great Wall – by using archaeological methods, revealing the missing wall's geographical position and extending directions for the first time. The bureau said the ruins of Chu Great Wall mostly belong to the Spring and Autumn Period (770 BC to 476 BC) while some were built during the Warring States period (403 BC-221 BC), and they mainly lie in the province's southern cities of Pingdingshan, Nanyang, Zhumadian and Xinyang. [Photo/CFP]