This author has not been identified. It may be one of the following persons: Look up 'Yu Wang' in GoogleThis author has not been identified. Look up 'Zi He' in GoogleThis author has not been identified. Look up 'Ying Yang' in GoogleThis author has not been identified. Look up 'Dazhi Ding' in GoogleThis author has not been identified. Look up 'Fan Ding' in GoogleThis author has not been identified. Look up 'Xun-Wang Dang' in Google