People perform on the ceremony in memory of Zhang Qian, in Chenggu county, Northwest China's Shaanxi province, April 3, 2018. Zhang Qian, a royal emissary in China's Han Dynasty (202 BC -220 AD), as pioneer of ancient Silk Road, traveled from China westward on a mission of peace and opened an overland route linking the East and the West, a daring undertaking which came to be known as Zhang Qian's journey to the Western regions.