We are sorry that the Abstract Review Center encountered a technical problem yesterday on the morning of June 1, 2016, which resulted in the zero number of abstracts shown in the system. We fixed the problem right away as we found it in the morning, so it fuctions normally from yesterday afternoon of June 1. Therefore, if any of our session organizers encountered the problem yesterday, please come back into the system to review the papers. Or if you meet with any other problem in using the system, please contact Ms. CHEN Yujie at iufro_ao2016@163.com .