This author has not been identified. Look up 'Lefeng Cheng' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Jie Zhang' in GoogleThis author has not been identified. Look up 'Linfei Yin' in GoogleThis author has not been identified. Look up 'Yang Chen' in GoogleThis author has not been identified. Look up 'Jianhui Wang' in GoogleThis author has not been identified. Look up 'Guiyun Liu' in GoogleThis author has not been identified. Look up 'Xiaogang Wang' in GoogleThis author has not been identified. Look up 'Dongxing Zhang' in Google