7 events the sources record for this year, grouped by region.
What happened
China (3)
The Goryeo Xijing Liushou Zhao Weichong betrayed his ruler and asked to submit with more than forty cities west of Cibei Ridge and east of the Yalu River, but it was not accepted. (History of Jin (Jinshi), Annals 金史 卷007 世宗 大定十五年9月)
Xin Qiji, Vice-Director of the Board of Revenue, was made Circuit Judicial Commissioner of Jiangxi, to command the regional armies and suppress the tea bandits. (History of Song (Songshi), Annals 宋史卷034 淳熙二年)
Kang Jeom, Byeongmasa of Jeollyeong, fights Jo Wi-chong, is defeated and removed from office. (Goryeosa (History of Goryeo) 世家 卷19 明宗 五年)
Korean Peninsula (1)
June 1175: rear army commander Du Gyeong-seung builds an earthwork and takes Yeonju with cannon; once the northwestern fortresses submit, the army moves to attack Seogyeong, and Yun In-cheom proposes a long siege with an earthen mound northeast of the city (Goryeosa Jeolyo (Essentials of Goryeo History) 권12 明宗光孝大王 五年)