《资治通鉴·汉纪·汉纪三十三》
夏季，四月，天旱，出现蝗灾。
夏，四月，旱，蝗。
In the summer, in the fourth month, there was a drought and a locust plague.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 夏，四月，旱，蝗。 [/INST] In the summer, in the fourth month, there was a drought and a locust plague.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 夏，四月，旱，蝗。
user
In the summer, in the fourth month, there was a drought and a locust plague.
assistant