7 events the sources record for this year, grouped by region.
What happened
China (2)
Laid a pontoon bridge over the Yalu River and built walled towns such as Bo, Seonui and Jeongwon for the campaign against Goryeo. (History of Liao (Liaoshi) 遼史 卷15 開泰3年 6月)
In summer the Liao ruler sends his kinsman Xiao Dili and the governor of Dongjing Yelü Dashi to attack Goryeo; they lay a pontoon bridge over the Yalu River and build the main walled cities of Bao, Xuan, Yi, and Dingyuan. (Xu Zizhi Tongjian (Continuation of the Comprehensive Mirror) 續資治通鑑 卷031 (1014년 조))
The Man chieftains Dương Trường Huệ and Đàm Kinh Chí invaded with 200,000 Man and stationed themselves at Kim Hoa fort. (Đại Việt sử ký toàn thư 本紀卷之二 「甲寅五年春正月，蠻將楊長惠、段敬」)
Built earthen walls on the four sides of Thăng Long, and renamed Ứng Thiên prefecture as Nam Kinh. (Đại Việt sử ký toàn thư 本紀卷之二 「甲寅五年春正月，蠻將楊長惠、段敬」)
Southern Europe (2)
Basil strikes the Bulgarians from behind above the Balathista pass. He has 15,000 prisoners blinded and sent back to Samuel (Skylitzes–Kedrenos, Synopsis of Histories Bonn Cedrenus II p.458 (part_13 L883-885))
After the defeat Samuel drinks water and dies two days later of a heart attack. His son Gabriel (Romanos) succeeds him (Skylitzes–Kedrenos, Synopsis of Histories Bonn Cedrenus II p.458 (part_13 L893-897))