《旧唐书·列传·卷一百零七》
长庆朝户口共三百三十五万，而兵额约九十九万，平均三户资养一兵。
长庆户口凡三百三十五万，而兵额约九十九万，通计三户资一兵。
There were 3.35 million households in the Changqing dynasty, and the number of troops was about 990,000, with an average of three households supporting one soldier.