I want to know the answer to the following question:
When did Manchu ethnicity become important again in the Eight Banners?
All the background I'm provided with is that "The years leading up to the conquest increased the number of Han Chinese under Manchu rule, leading Hong Taiji to create the Eight Han Banners (zh), and around the time of the Qing takeover of Beijing, their numbers rapidly swelled.". Is that enough to answer the question?