Wanli era

'ten thousand calendars'; 2 February 1573 – 27 August 1620; Qing dynasty avoided the naming taboo of Hongli 弘曆, the Qianlong Emperor, and wrote 曆 as 歷, 厯, 厤) was the era name (nianhao) of the Wanli Emperor, the 14th emperor of Ming dynasty.

During the early years of the Wanli era, Zhang Juzheng implemented a series of reform measures that resulted in continuous social and economic development and military victories, and the imperial court showed a restoration atmosphere.

However, a dispute over succession (國本之爭) arose, and the Wanli Emperor was prevented by his powerful advisors from naming his beloved son as crown prince.

In a fit of anger, he refused to attend court for thirty years, resulting in a period of neglect known as the "Wanli's negligence" (萬曆怠政).

During this time, factionalism among government officials was allowed to rise, leading to the Donglin factional strife (東林黨爭) and the use of the Three Cases of the Late Ming (明末三案) to further their own agendas.