Qin dynasty
Note: King Zhaoxiang of Qin (秦昭襄王) had already been ruling Qin for 51 years when Qin annihilated the Zhou dynasty; however the other six warring states were still independent regimes. Some Chinese historiographers thus used the next year (the 52nd year of King Zhaoxiang of Qin) as the official succession from the Zhou dynasty.
Daoguang Emperor
The Daoguang Emperor (Wade-Giles: "Tao Kuang" Emperor) (16 September 1782 – 26 February 1850) was the eighth emperor of the Manchu-led Qing dynasty and the sixth Qing emperor to rule over China proper, from 1820 to 1850. His reign was marked by "external disaster and internal rebellion," that is, by the First Opium War, and the beginning of the Taiping Rebellion which nearly brought down the dynasty. The historian Jonathan Spence characterizes the Daoguang Emperor as a "well meaning but ineffective man," who promoted officials who "presented a purist view even if they had nothing to say about the domestic and foreign problems surrounding the dynasty."