Fig 1 (IMAGE) Higher Education Press Caption Fig 1 Credit Yue Yuan, Jiaxuan Li, Xun Lu, Min Chen, Huifang Liang, Xiao-ping Chen, Xin Long, Bixiang Zhang, Song Gong, Xiaowei Huang, Jianping Zhao, Qian Chen Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.