What are some things in history that were not optimistic at first, but finally made a blockbuster?

In the history of our country, many people were ignored by others at first, thinking that he was a mediocre person, but later he made a blockbuster because of something. In the end, he became famous all over the world and won the respect of everyone. There are many such examples. Let me give you some examples that we are all familiar with.

First of all, the first person who is not optimistic in history is Jiang Ziya. As we all know, Jiang Ziya was favored by Zhou Wuwang only when he was very old, and then returned to China to be his prime minister. Finally, he helped Zhou Wenwang establish the Zhou Dynasty and unified the whole country. Jiang Taigong took the bait. He has been waiting for his king. He can make him a talented king. So he spent many years honing his will and waiting by the stream. Before, Jiang Ziya was just a disciple who learned a little fur magic in Kunlun Mountain. However, the original Buddha gave him a very important task. So after accepting this task, he began the road of counterattack very carefully and eventually became famous all over the world.

The second person I think was ignored at first was Sima Yi, who was surrounded by many powerful counselors, such as Yu Xun and Jia Xu, Dong Zhao and Wang Lang. These people are all very wise counselors that Cao Cao always carried with him in his early days, but Sima Yi did not reuse him after Cao Cao met him. However, Sima Yi has been forbearing to expand his power and develop his own strategy.

After decades of grinding a sword, it finally replaced the Jiangshan laid by Cao Cao after three dynasties. Although it is indecent for Sima Yi to seek usurpation in history, I think he also achieved such success by his own efforts, so he was also an underdog in the early days, but in the end he became the king of a country by a blockbuster.

Finally, let's talk about foreign scientist Einstein. We all think that Einstein was considered mentally retarded when he was young. Because he was three or four years old, he couldn't even speak clearly and his intelligence was not particularly high, so his parents and friends thought that he must be mentally retarded in the future, but he didn't expect his later achievements to be so high.