《北史·本记·卷三》
十二年春正月初一，初次设立五牛的旌旗。
十二年春正月辛巳朔，初建五牛旌旗。
On the first day of the first month in the spring of the twelth year, he established flags with five cattle.
<s>[INST] Translate the following Classical Chinese text into English: 十二年春正月辛巳朔，初建五牛旌旗。 [/INST] On the first day of the first month in the spring of the twelth year, he established flags with five cattle.</s>
Translate the following Classical Chinese text into English: 十二年春正月辛巳朔，初建五牛旌旗。
user
On the first day of the first month in the spring of the twelth year, he established flags with five cattle.
assistant