《资治通鉴·唐纪·唐纪十八》
黑齿常之在军中七年，吐蕃人很害怕他，不敢进犯唐朝边地。
常之在军七年，吐蕃深畏之，不敢犯边。
Heichi Changzhi served in the army for seven years, and the Tufan people were very afraid of him and did not dare to invade the Tang border.
<s>[INST] Convert the following English text into Classical Chinese: Heichi Changzhi served in the army for seven years, and the Tufan people were very afraid of him and did not dare to invade the Tang border. [/INST] 常之在军七年，吐蕃深畏之，不敢犯边。</s>
Convert the following English text into Classical Chinese: Heichi Changzhi served in the army for seven years, and the Tufan people were very afraid of him and did not dare to invade the Tang border.
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常之在军七年，吐蕃深畏之，不敢犯边。
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