《宋史·本纪·卷八》
十八日，免除大食国商人税一半。
乙酉，免大食国蕃客税之半。
On the 18th, half of the commercial tax owed by merchants from the Great Food State was absolved.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 乙酉，免大食国蕃客税之半。 [/INST] On the 18th, half of the commercial tax owed by merchants from the Great Food State was absolved.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 乙酉，免大食国蕃客税之半。
user
On the 18th, half of the commercial tax owed by merchants from the Great Food State was absolved.
assistant