This author has not been identified. Look up 'Zhiyong Du' in GoogleThis author has not been identified. Look up 'Youming Sun' in GoogleThis author has not been identified. Look up 'Weisi Guo' in GoogleThis author has not been identified. Look up 'Yuhua Xu' in GoogleThis author has not been identified. Look up 'QiHui Wu' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Jie Zhang' in Google