8 events the sources record for this year, grouped by region.
What happened
China (5)
Nùng Trí Cao rebelled, proclaimed himself Emperor Renhui of the state Đại Nam, invaded Song territory, and broke the Hengshan stockade. (Đại Việt sử ký toàn thư 本紀卷之二 「壬辰四年春正月，封諸皇子為王侯皇」)
In the fifth month, Nong Zhigao took Yongzhou, captured eight prefectures including Hengzhou and Guizhou, and besieged Guangzhou. (History of Song (Songshi), Annals 宋史卷012 皇祐四年)
In the twelfth month, Chen Shu, Guangxi Military Commissioner, was defeated; he then pursued the rebels and fought at the Jincheng post. (History of Song (Songshi), Annals 宋史卷012 皇祐四年)
Xiao Zhu, prefect of Panyu, breaks out of the encirclement, gathers two thousand sea-faring young men, sets fire on a windy night and greatly defeats the enemy ships, and brings reinforcements and provisions into the city. (Xu Zizhi Tongjian (Continuation of the Comprehensive Mirror) 續資治通鑑 卷052 (1052년 조))
Five thousand men come down east along the Yu River and break the Hengshan stockade; the stockade chief Zhang Rixin and the Yongzhou patrol commissioner Gao Shi'an are killed. (Xu Zizhi Tongjian (Continuation of the Comprehensive Mirror) 續資治通鑑 卷052 (1052년 조))
Korean Peninsula (1)
Eastern Jurchen under Go Ji-mun and others arrive by sea and attack Imwonsu in Samcheok County; commander Ha Ju-ryeo sallies out, and at the bugle of Anbyeon deputy judge Kim Sung-jeong the enemy scatters in fear, with over ten heads taken (Goryeosa Jeolyo (Essentials of Goryeo History) 권4 文宗仁孝大王 六年)
Western Europe (1)
Gruffydd, king of Wales, plundered Herefordshire and came near Leominster; the English and the French of the castle fought, and many died. (Anglo-Saxon Chronicle Giles/Ingram 1847 A.D. 1052 항 (pg657.txt 줄 6118))
Eastern Europe & Russia (1)
Vladimir Yaroslavich dies in Novgorod the Great on 4 October. (Novgorod First Chronicle litopys 기사 1052년)