《三国志·吴书·张顾诸葛步传》
张昭容貌矜持严整，很有威严。孙权常说： 我与张公谈话，不敢随口妄言。 
昭容貌矜严，有威风，权常曰： 孤与张公言，不敢妄也。 
Zhang Zhao looked dignified and had a lot of authority. Sun Quan often said: "When I talk to Zhang Gong, I dare not speak casually."
<s>[INST] Kindly elucidate the central themes in this passage in English: 昭容貌矜严，有威风，权常曰： 孤与张公言，不敢妄也。  [/INST] Zhang Zhao looked dignified and had a lot of authority. Sun Quan often said: "When I talk to Zhang Gong, I dare not speak casually."</s>
Kindly elucidate the central themes in this passage in English: 昭容貌矜严，有威风，权常曰： 孤与张公言，不敢妄也。
user
Zhang Zhao looked dignified and had a lot of authority. Sun Quan often said: "When I talk to Zhang Gong, I dare not speak casually."
assistant