Some people in Chinese Academy of Sciences and Zhang Shuguang think that there is nothing wrong with Pei Gang's paper because of the director's words: it is difficult to repeat the biological experiment perfectly, and it is meaningful to look at the trend. In fact, there is no point in repeating the experiment in this matter. Because Rao Yi thinks that the standard of repeated experiments is to prove once again that there is no statistically significant difference between the activities of quintuple transmembrane and heptamer transmembrane, which can be understood as perfect repetition. However, Chinese Academy of Sciences and Pei believe that the standard of repetition is to prove that pentad transmembrane has activity, rather than having to prove that pentad transmembrane and heptad transmembrane have almost the same activity.