[China Science Biography: the company does not invest in generative artificial intelligence, AIGC and other related business] June 7, China Science and Technology Biography issued an announcement of changes. The stock closed with a cumulative deviation of more than 20% for three consecutive trading days on June 5, June 6 and June 7, which belongs to abnormal fluctuations in stock trading according to the relevant regulations. As of the date of disclosure of this announcement, it is confirmed that there is no material information that should be disclosed but not disclosed. After the company's self-examination, the company's business activities are normal, the daily business situation has not undergone major changes, and there is no significant information that should be disclosed but not disclosed. At present, the company has not invested in generative artificial intelligence, AIGC and other related business.