《资治通鉴·唐纪·唐纪六十二》
李性情深沉而刚毅，处理问题十分果断，喜怒不形于色。
瀍沉毅有断，喜愠不形于色。
Li was deep-thinking and resolute, and he was very decisive when handling problems. He was able to hide his feelings.
<s>[INST] 请提供这段文言文的现代汉语解释: 瀍沉毅有断，喜愠不形于色。 [/INST] 李性情深沉而刚毅，处理问题十分果断，喜怒不形于色。</s>
请提供这段文言文的现代汉语解释: 瀍沉毅有断，喜愠不形于色。
user
李性情深沉而刚毅，处理问题十分果断，喜怒不形于色。
assistant