《史记·三十世家·晋世家》
负羁就私下给重耳食物，并把一块璧玉放在食物下面。
负羁乃私遗重耳食，置璧其下。
Fu Ji secretly provided food for Chong'er, with a piece of jade under the food.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 负羁乃私遗重耳食，置璧其下。 [/INST] Fu Ji secretly provided food for Chong'er, with a piece of jade under the food.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 负羁乃私遗重耳食，置璧其下。
user
Fu Ji secretly provided food for Chong'er, with a piece of jade under the food.
assistant