195 1 year 1 month 2 1 day, Li Han, the captain of the 28th brigade of the 4th Division 10 regiment, led a team to fight with the US Air Force, injuring the US plane 1 frame, which was the first air combat of the Volunteer Air Force. On the 29th, Li Han led his team to air combat with the American plane again, shooting down each 1 frame that injured the American plane, setting a record for the first time that the Volunteer Air Force shot down the American plane.