partie 1: <br />http://www.dailymotion.com/video/xb06zb_la-grande-muraille-de-chine-13_tech <br />partie 2: <br />http://www.dailymotion.com/video/xb07kq_la-grande-muraille-de-chine-23_tech <br />partie 3: <br />http://www.dailymotion.com/video/xb08un_la-grande-muraille-de-chine-33_tech
