Niu Yinlu shows his calligraphy work – a scroll of the constitution of the Communist Party of China – in Hantai town, Xinle city, North China's Hebei province, July 14, 2011. The 86-year-old CPC member spent more than one month writing 17,000 words onto the scroll, which is 50 meters long and half a meter wide, as a tribute to the Party's 90th anniversary.