《资治通鉴·晋纪·晋纪六》
赵王司马伦大为恐慌，对孙辅等所说的秘而不宣，急忙召他儿子司马虔及许超回来。
赵王伦大恐，秘之，而召其子虔及许超还。
King Sima Lun of Zhao was terrified and kept what Sun Fu and the others said a secret, and hurriedly summoned his son Sima Qian and Xu Chao back.
<s>[INST] Kindly elucidate the central themes in this passage in English: 赵王伦大恐，秘之，而召其子虔及许超还。 [/INST] King Sima Lun of Zhao was terrified and kept what Sun Fu and the others said a secret, and hurriedly summoned his son Sima Qian and Xu Chao back.</s>
Kindly elucidate the central themes in this passage in English: 赵王伦大恐，秘之，而召其子虔及许超还。
user
King Sima Lun of Zhao was terrified and kept what Sun Fu and the others said a secret, and hurriedly summoned his son Sima Qian and Xu Chao back.
assistant