Zhang Lian in his native home in Yanchi, in Northwest China's Ningxia Hui autonomous region, at sunset. KUANG LINHUA/CHINA DAILY 'Peasant poet' Zhang Lian, whose words paint vivid pictures of his remote, vast home, has captivated and inspired professors and plumbers alike, Zhao Xu reports. The aim of the trip was for Liu, a professor of linguistics and world literature …