The 7th National Conference on Number Theory will be held at Tai'an Shandong Province, China, during May 16 - 19, 2015. May 16 is the arrival day and May 19 is the departure day. The expected audiences are experts, scholars and graduate students from China and abroad who are interested in the particular fields. Organizers: Jianya Liu, Shandong University Guangshi Lv, Shandong University Guanghua Ji, Shandong University Zhao Xu, Shandong University Jiao Shen, Shandong University Please click the following link for more details. http://www.prime.sdu.edu.cn/ncnm/welcome.html