Definition: This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
Input: First, the Yongying system signaled the end of Manchu dominance in Qing military establishment. Although the Banners and Green Standard armies lingered on as a drain on resources, henceforth the Yongying corps became the Qing government's de facto first-line troops. Second, the Yongying corps were financed through provincial coffers and were led by regional commanders, weakening central government's grip on the whole country. Finally, the nature of Yongying command structure fostered nepotism and cronyism amongst its commanders, who laid the seeds of regional warlordism in the first half of the 20th century.
Output:
What entity became the main Qing troops?