Answer:
Christianity.
Step-by-step explanation:
The Qing Dynasty of China is one of the most prosperous times in the era of kingdoms. This dynasty also became the last of the imperial dynasty form of power in China.
The "Prosperous Age" of the Qing Dynasty was during the rule of Kangxi who focused on reaching the zenith of the empire in all spheres, be it economic, military, and social. He also maintained the legitimacy of the people by emphasizing their Manchu identity. And in so doing, they also have the specific religion of heaven worship and thus forbids the conversion to the Christian religion. So, whoever converts to the Christian religion is then persecuted by the emperors.