On May 2 this year, Han Chunyu, an associate professor of Hebei University of Science and Technology, published a paper on the new technology of NgAgo gene editing, which was sensationally reported by the domestic media. However, up to now, many laboratories at home and abroad have expressed their inability to repeat Han Chunyu's results, and more and more questions have been raised about the experiment. Recently, 13 scientists called for the investigation of Han Chunyu, and the incident has become the focus of public opinion again.