《明史·列传·卷五十》
 迤北朝贡使者越来越多，包藏祸心，诚然难以估测。
迤北贡使日增，包藏祸心，诚为难测。
The number of envoys paying tribute from the north of the border is increasing, and their ulterior motives are truly hard to guess.
<s>[INST] Explain the meaning of this Classical Chinese passage in English: 迤北贡使日增，包藏祸心，诚为难测。 [/INST] The number of envoys paying tribute from the north of the border is increasing, and their ulterior motives are truly hard to guess.</s>
Explain the meaning of this Classical Chinese passage in English: 迤北贡使日增，包藏祸心，诚为难测。
user
The number of envoys paying tribute from the north of the border is increasing, and their ulterior motives are truly hard to guess.
assistant