《新唐书·本纪·卷八·穆宗 敬宗 文》
开成五年正月，文宗病危，神策军护军中尉仇士良、鱼弘志诈传伪诏废黜皇太子李成美仍为陈王，立颍王李炎为皇太弟。
开成五年正月，文宗疾大渐，神策军护军中尉仇士良、鱼弘志矫诏废皇太子成美复为陈王，立颍王为皇太弟。
In the first month of the fifth year of the Kai Cheng Era, when Emperor Wenzong was seriously ill, the Protector General of the Left and Right Divine Strategy Armies, Chou Shilang and Yu Hongzhi, falsely announced an imperial edict to demote Imperial Crown Prince Li Chengmei to be the Prince of Chen and establish Li Yan, the Prince of Ying, as Imperial Crown Prince.
<s>[INST] Given the Classical Chinese text: 开成五年正月，文宗疾大渐，神策军护军中尉仇士良、鱼弘志矫诏废皇太子成美复为陈王，立颍王为皇太弟。, provide a step-by-step translation process to arrive at the English translation. [/INST] 
**Step 1: Word-for-word translation**
开成五年正月，文宗疾大渐，神策军护军中尉仇士良、鱼弘志矫诏废皇太子成美复为陈王，立颍王为皇太弟。
The first month of the fifth year of Kaicheng era, Emperor Wenzong was seriously ill. Chou Shilang and Yu Hongzhi from the Division of the Guards of the Divine Strategy Army issued a forged imperial edict to demote the imperial crown prince Li Chengmei to be the Prince of Chen again and establish Li Yan the Prince of Ying as imperial crown prince.

**Step 2: Grammatical analysis**
开成五年正月：temporal phrase, indicating the time when the event took place.
文宗疾大渐：subject-predicate phrase, indicating that Emperor Wenzong was seriously ill.
神策军护军中尉仇士良、鱼弘志：subject, indicating that Chou Shilang and Yu Hongzhi were the ones who did the action.
矫诏废皇太子成美复为陈王，立颍王为皇太弟：verb-object phrase, indicating that the imperial crown prince Li Chengmei was demoted to be the Prince of Chen again and Li Yan the Prince of Ying was established as imperial crown prince.

**Final English translation:**
In the first month of the fifth year of the Kai Cheng Era, when Emperor Wenzong was seriously ill, the Protector General of the Left and Right Divine Strategy Armies, Chou Shilang and Yu Hongzhi, falsely announced an imperial edict to demote Imperial Crown Prince Li Chengmei to be the Prince of Chen and establish Li Yan, the Prince of Ying, as Imperial Crown Prince.</s>
Given the Classical Chinese text: 开成五年正月，文宗疾大渐，神策军护军中尉仇士良、鱼弘志矫诏废皇太子成美复为陈王，立颍王为皇太弟。, provide a step-by-step translation process to arrive at the English translation.
user
**Step 1: Word-for-word translation**
开成五年正月，文宗疾大渐，神策军护军中尉仇士良、鱼弘志矫诏废皇太子成美复为陈王，立颍王为皇太弟。
The first month of the fifth year of Kaicheng era, Emperor Wenzong was seriously ill. Chou Shilang and Yu Hongzhi from the Division of the Guards of the Divine Strategy Army issued a forged imperial edict to demote the imperial crown prince Li Chengmei to be the Prince of Chen again and establish Li Yan the Prince of Ying as imperial crown prince.

**Step 2: Grammatical analysis**
开成五年正月：temporal phrase, indicating the time when the event took place.
文宗疾大渐：subject-predicate phrase, indicating that Emperor Wenzong was seriously ill.
神策军护军中尉仇士良、鱼弘志：subject, indicating that Chou Shilang and Yu Hongzhi were the ones who did the action.
矫诏废皇太子成美复为陈王，立颍王为皇太弟：verb-object phrase, indicating that the imperial crown prince Li Chengmei was demoted to be the Prince of Chen again and Li Yan the Prince of Ying was established as imperial crown prince.

**Final English translation:**
In the first month of the fifth year of the Kai Cheng Era, when Emperor Wenzong was seriously ill, the Protector General of the Left and Right Divine Strategy Armies, Chou Shilang and Yu Hongzhi, falsely announced an imperial edict to demote Imperial Crown Prince Li Chengmei to be the Prince of Chen and establish Li Yan, the Prince of Ying, as Imperial Crown Prince.
assistant