《新唐书·列传·卷一百四十一》
第二天，虏军围城，日进开动机车投石，再加强弓，贼死伤甚多。
明日，虏薄城，日进发机石劲弩，故兵多死。
The next day, the enemy army surrounded the city, Ri Jin used the catapult to throw stones, and also strengthened the bow, the enemy suffered many deaths and injuries.