《明史·列传·卷一百九十六》
士英笑道 ：你既归附朝廷，还用那玩艺儿干什么？ 
士英笑曰： 若既归朝，安用此？ 
Shi Ying smiled and said: "Now that you've come under the jurisdiction of the court, what use do you have for that plaything?"
<s>[INST] Kindly elucidate the central themes in this passage in English: 士英笑曰： 若既归朝，安用此？  [/INST] Shi Ying smiled and said: "Now that you've come under the jurisdiction of the court, what use do you have for that plaything?"</s>
Kindly elucidate the central themes in this passage in English: 士英笑曰： 若既归朝，安用此？
user
Shi Ying smiled and said: "Now that you've come under the jurisdiction of the court, what use do you have for that plaything?"
assistant