Hyoso (687–702) (r. 692–702) was the thirty-second monarch of Silla, a kingdom that flourished on the Korean peninsula from approximately 200 to 927 CE.
Like his father, Hyoso faced some opposition in the form of revolts by high-ranking members of the Silla aristocracy.
[2] Relations with Tang also saw improvement during Hyoso's reign following the diplomatic disintegration that followed in the wake of the wars of unification during the 660s and 670s and the foundering of the Tang-Silla alliance.
[3] Tribute relations were steadily maintained and Hyoso, as Sinmun before him, was "enfeoffed" by the Tang emperor as King of Silla.
A few citations in the record of King Hyoso in the 12th century Korean history Samguk sagi also attest to steady diplomatic contact with Japan, and Japanese histories (notably the Shoku Nihongi) are reliable sources for confirming death dates of Silla's kings and queens during this period, as Japan would often hear of their deaths through diplomatic envoys.