The world in 657 AD — what happened that year

6 events the sources record for this year, grouped by region.

What happened

Su Dingfang crushed the Western Turk Shapolo Khan Helu; the Western Regions were pacified and the Mengzhi and Kunling protectorates were established. (Old Book of Tang (Jiu Tangshu), Annals 舊唐書卷4 顯慶2年)
Su Dingfang defeated and captured He Lu at Jinya Mountain, pacifying the Western Turks. (New Book of Tang (Xin Tangshu), Annals 新唐書卷003 高宗顯慶2年12月)
The Luoyang Palace was made the Eastern Capital. (New Book of Tang (Xin Tangshu), Annals 新唐書卷003 高宗顯慶2年12月)
Baekje sent generals to attack Silla's two fortresses of Doksan and Dongjam. (Samguk Sagi (History of the Three Kingdoms) 卷28 義慈王 17年)
In December 657, Shabolo's men first attack the infantry, pushing three times without budging; Su Dingfang strikes with cavalry, routs them, pursues 30 li, and beheads and captures tens of thousands. (Zizhi Tongjian (Comprehensive Mirror) 권200 657년 항)

In the seventh month of the third year, a Sumeru (Mount Meru)-shaped structure is built west of Asukadera, the Urabon rite is held, and the people of Tamna (耽羅) are entertained (Nihon Shoki (Chronicles of Japan) 日本書紀卷第廿六斉明紀 3年 단락26)