《旧唐书·本纪·卷十九》
中和二年春，正月初一，全国救援朝廷的军队聚集在京师附近的地区，京师的粮食吃光了。
二年春正月甲辰朔，天下勤王之师，云会京畿，京师食尽。
In the spring of the second year of Zhonghe, on the first day of the first lunar month, the army which came from the whole country to rescue the court gathered in the areas near the capital, and the food in the capital was all eaten up.