《宋书·志·卷三十二》
如若有这种妖异出现，东南数百里处一定有造反叛乱的人。 
傥有此，东南数百里必有作逆者。 
If such a strange phenomenon appears, there must be someone making a rebellion within hundreds of miles in the southeast.
<s>[INST] Kindly elucidate the central themes in this passage in English: 傥有此，东南数百里必有作逆者。  [/INST] If such a strange phenomenon appears, there must be someone making a rebellion within hundreds of miles in the southeast.</s>
Kindly elucidate the central themes in this passage in English: 傥有此，东南数百里必有作逆者。
user
If such a strange phenomenon appears, there must be someone making a rebellion within hundreds of miles in the southeast.
assistant