Please recommend some novels about Qing history and the Republic of China.

In the first book, the protagonist traveled from the base to the Republic of China with a car, then went to the United States to develop cars and then returned to the country to cause trouble. In the second book, the protagonist went to the United States and Mexico to get oil. After getting the money, he returned to the country to start the post-industrial revolution. The third novel was also about warlords, and it mentioned Gu Hongming, Liu Tianhua, and Han clothing. Especially since it was the male protagonist, and it had nothing to do with the small warlord 1911, the new warlord New China, etc. PS, I lost my memory in a car accident, so there really is something wrong with my memory. Perhaps the three novels I mentioned were actually one. That's all I can think of. Reading a novel is no different from reading a new one. It could also be considered a way to retrieve his memories.