8 events the sources record for this year, grouped by region.
What happened
China (7)
The sons were enfeoffed as princes of Qin, Jin, Yan, Wu, Chu, Qi, Tan, Zhao and Lu, including the Prince of Yan, Zhu Di. (History of Ming (Mingshi), Annals 明史 卷2 洪武三年)
Li Wenzhong took Yingchang; the Yuan heir fled north, and his son Madilibala with more than 50,000 men surrendered. (History of Ming (Mingshi), Annals 明史 卷2 洪武三年)
Ming troops raid Yingchang prefecture and capture the imperial grandson Maidilibala with the consorts and jewels; the crown prince flees with a dozen riders (History of Yuan (Yuanshi), Annals 元史 卷47 順帝 1370年 5月)
Yi Seong-gye, with Ji Yong-su and others, reaches Uiju, lays a pontoon bridge, crosses the Amnok River and suddenly attacks and takes Yoseong. (Goryeosa (History of Goryeo) 世家 卷42 恭愍 十九年)
1370: Yi Seong-gye crosses Hwangchoryeong and Seolhallyeong and the Amnok River with 5,000 cavalry and 10,000 infantry. Yi Orochit'mur, deputy of Dongnyeongbu, tried to block at Ura mountain fortress but, when Yi arrives, removes his armor, bows and submits with over 300 households (Goryeosa Jeolyo (Essentials of Goryeo History) 권29 恭愍王 十九年)
November 1370: crossing the Amnok River from Uiju by pontoon bridge, Yi reaches Najangtap with only seven days' provisions and raids Yoseong with 3,000 cavalry (Goryeosa Jeolyo (Essentials of Goryeo History) 권29 恭愍王 十九年)
Eastern Europe & Russia (1)
Lithuanian troops ravaged the surroundings for eight days and burned the suburbs, but could not take the Kremlin; Dmitry commanded the defense. (Karamzin, History of the Russian State 제5권 I장)