Sentence 1: At that time , Cao Mao was merely a puppet emperor , as the actual power was in the hands of the regent Sima Zhao ( Sima Wangs Cousin ) .
Sentence 2: At the time , Cao Mao was merely a puppet emperor , as the actual power was in the hands of Regent Sima Wang ( Sims Zhaos Cousin ) .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?