This author has not been identified. Look up 'Teng Li' in GoogleThis author has not been identified. Look up 'Bingbing Ni' in GoogleThis author has not been identified. Look up 'Mengdi Xu' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Meng Wang' in GoogleThis author has not been identified. Look up 'Qingwei Gao' in GoogleThis author has not been identified. Look up 'Shuicheng Yan' in Google