《旧唐书·本纪·卷八》
三年春正月初四，立郢王嗣谦为皇太子，死罪以下囚徒减刑，聚饮三天。
三年春正月丁亥，立郢王嗣谦为皇太子，降死罪已下，大酺三日。
On the fourth of the first month of the third year of spring, Yining King Si Qian was made the Crown Prince. Prisoners sentenced to death and below were granted amnesty, and there was a three-day feast.
<s>[INST] Provide a modern Chinese interpretation of the following Classical Chinese passage: 三年春正月丁亥，立郢王嗣谦为皇太子，降死罪已下，大酺三日。 [/INST] 三年春正月初四，立郢王嗣谦为皇太子，死罪以下囚徒减刑，聚饮三天。</s>
Provide a modern Chinese interpretation of the following Classical Chinese passage: 三年春正月丁亥，立郢王嗣谦为皇太子，降死罪已下，大酺三日。
user
三年春正月初四，立郢王嗣谦为皇太子，死罪以下囚徒减刑，聚饮三天。
assistant