Were the manchus a strong or weak dynasty?

The manchus were a strong dynasty, as they imposed their culture in the Chinese territory, lasting almost 300 years.

The Qing dynasty also called the Manchu dynasty by foreigners, was the last imperial dynasty of China, established in 1636 and ruled over China between 1644-1912. It was preceded by the Ming Dynasty and succeeded by the Republic of China. The Qing multicultural empire lasted almost three centuries and formed the territorial base for the modern Chinese state.