April 13 (March 13), seeing in 675, Emperor Gaozong Dahir the Empress Wu proactive national policy.

AD 675, Tang Emperor suffering from wind dizzy disease grew worse, they negotiate with ministers prepared to allow the Empress Wu (days) Regent. Prime Minister Hao at so remonstrance said: "Your Majesty, do nothing Gaozu, Taizong of the world, does not pass the descendants commissioned days almost! Tang Emperor thus temporarily stopped meeting.
Empress Wu after that, brought together some of the literary scholar wrote "column female biography," Chen track "," Bai Liao Caution "," music book, about more than a thousand volumes; and Mullington the power to participate in decision Baiguan sparse playing to sub-prime minister. Soon, Prince Philip died, the Emperor issued an edict: "I party seeking to pass bit Crown Prince, and rapid can not afford, it application to life, to be such as name, AIDS is honor their emperor.
(after Spring on March 13, 2002), April 13, 675 AD edict: Wuhou She governance. December 676 AD the reign title Giho, Busch amnesty.