If a person traveled to the end of the Ming Dynasty, could he create modern weapons? And change history?

If a person traveled to the end of the Ming Dynasty, whether he could create modern weapons and change history depended on many factors such as whether he had the relevant knowledge and skills, the technical conditions at that time, the acceptance of society, and so on. If he had the knowledge and skills to make modern weapons, he could show his ability and strength by making weapons and gain the recognition and support of society. This might bring him more opportunities and power, but he also had to face many difficulties and challenges, such as the level of weapon technology and war strategy at that time, as well as the acceptance of new technologies and new things by society, etc. If he could successfully create modern weapons and change history, it might have a profound impact on his social status and destiny, but he would also have to bear the corresponding responsibilities and consequences. The course of history was complicated, and any changes needed careful consideration and weighing. In short, it was possible to make modern weapons in the late Ming Dynasty, but it required a certain amount of knowledge and skills. At the same time, it also needed to take into account the social background and historical conditions at that time.