This author has not been identified. Look up 'Yu Zhang' in GoogleThis author has not been identified. Look up 'Yu Feng' in GoogleThis author has not been identified. Look up 'Xiaobo Rui' in GoogleThis author has not been identified. Look up 'Lixin Xu' in GoogleThis author has not been identified. Look up 'Lei Qi' in GoogleThis author has not been identified. Look up 'Zi Yang' in GoogleThis author has not been identified. Look up 'Cong Hu' in GoogleThis author has not been identified. Look up 'Peng Liu' in GoogleThis author has not been identified. Look up 'Haijiang Zhang' in Google