Group 1 - The core point of the article is that Yuntian Lifei (688343) has filed an international patent application for a "Question and Answer Model Training Method, Question and Answer Method, Device, and Terminal Equipment" with the application number PCT/CN2024/129964, which will be published internationally on February 19, 2026 [1] - Yuntian Lifei has announced a total of 7 international patent applications this year [1] - In the first half of 2025, the company invested 203 million yuan in research and development, representing a year-on-year increase of 11.87% [1]