What if Ming Dynasty China purged Confucianism more during the Yongle Emperor, could it have improved the Dynasty's longevity?
During the rise of the Ming Dynasty, the Yongle Emperor, Zhu Di, who as the uncle of the Emperor, seized the throne during a Civil War under the banner of eliminating corrupt officials within the Imperial Court.
During his reign, Ming Dynasty in the early 1400s reached its peak with Zheng He's treasure fleet voyages across Asia, India, the Middle East, and East Africa, decades before the Portuguese began their trade journeys. However, after his death, Confucian officials within the Ming Court discontinued the explorations and reduced the size of the fleet to that of coastal defense only (causing issues to arise for its people with ocean raiding Wukou Japanese pirates).
While nominally, the Yongle Emperor promoted himself as an ideal Confucian leader, he was a radical who opposed some of that era's Confucian scholars, especially ministers of his nephew, the Emperor he eventually usurped. In a famous historical event, after taking power and arresting the former officials of his nephew, he ordered the only example of a Chinese emperor executing a person by the 10th degree. Scholar Fang Xiaoru’s entire family, extended kin, and—uniquely—his students and peers within the same school of Confucian thought were all executed, totalling 873 people. Then, he promoted his own version of Confucianism with commentaries on the Four Books to secure the loyalty of other Confucian schools.
So, in this scenario, let's assume Yongle Emperor went further than just one school of Confucianism, we're talking about hundreds of thousands scholars purged to narrow Confucian thought, eliminating elements like spendthrift on military development, ban on commercial development, conservative foreign affairs, benevolent relations between nations (The bad tributary relationship where a nation gives 1 pound of gold and the Ming Dynasty must return 5 times the gift's value as Confucians argued), and the formation of official cliques such as the later Ming Dynasty's corrupt Donglin party of Confucian officials who exempted taxation on the gentry and overtaxed peasants, leading to the revolts within the Ming Dynasty.
Some may ask the basic question: Can this even be accomplished with the means available? Well, the Ming Dynasty had probably the most advanced secret police of that era, with its Eastern Depot being remembered even in contemporary literature as an all-knowing and all-seeing agency under direct control of the Emperor. There are also the embroidered guards, who act as the Emperor's enforcers and assassins within the empire. Essentially, Ming China had early elements of a strong central government in the making, except Yongle Emperor wanted to maintain a semblance of Confucian scholarship for posterity.
This desire for Confucian acceptance of his rule ultimately sowed the seeds of the Ming Dynasty's eventual fall, as Confucian court officials later undermined and ultimately removed the power of the Eastern Depot and the Embroidered Guards.
Does anyone else think purging more Confucians and eliminating more schools of Confucian thought could have lengthened the Ming Dynasty's reign?