《仪礼·觐礼》
同姓诸侯面朝西以北为上位；异姓诸侯面朝东以北为上位。
同姓西面北上，异姓东面北上。
The vassals of the same surname faced west with the north as the top; the vassals of different surnames faced east with the north as the top.
<s>[INST] Convert the following modern Chinese text into Classical Chinese: 同姓诸侯面朝西以北为上位；异姓诸侯面朝东以北为上位。 [/INST] 同姓西面北上，异姓东面北上。</s>
Convert the following modern Chinese text into Classical Chinese: 同姓诸侯面朝西以北为上位；异姓诸侯面朝东以北为上位。
user
同姓西面北上，异姓东面北上。
assistant