《太平广记·卷四百八十二·蛮夷三》
回到扬州时，拜见皇上之前便给他们解下铁钳。
还至江都，将见，为解脱之。
When he returned to Yangzhou, before meeting the emperor, he took off their iron pincers.
<s>[INST] Kindly elucidate the central themes in this passage in English: 还至江都，将见，为解脱之。 [/INST] When he returned to Yangzhou, before meeting the emperor, he took off their iron pincers.</s>
Kindly elucidate the central themes in this passage in English: 还至江都，将见，为解脱之。
user
When he returned to Yangzhou, before meeting the emperor, he took off their iron pincers.
assistant