12 events the sources record for this year, grouped by region.
What happened
China (5)
Yongchun, Seohyeon and Yusin attacked Goguryeo's Nangbi fortress and, after killing more than five thousand, forced its surrender. (Samguk Sagi (History of the Three Kingdoms) 卷04 眞平王 51年)
Xuanzang left Chang'an and, with a monk of Qinzhou (Tsing-chau, Gansu), reached that city and rested. (Preface: at age 26 he resolved to travel to the Western Regions.) (Xuanzang, Great Tang Records on the Western Regions Si-yu-ki (Beal 1884) vol.1 Introduction (Beal) Chang'an)
Under escort of officials he reached Liangzhou (Liang-chau); Liangzhou was the gathering place of merchants from Tibet and from the lands east of the Pamirs (Congling), and Xuanzang made known to them his aim of seeking the Dharma. (Xuanzang, Great Tang Records on the Western Regions Si-yu-ki (Beal 1884) vol.1 Introduction (Beal) Liangzhou)
After passing the border watchtower section, he reached the frontier of Yiwu (I-gu, Hami) and stopped. (Xuanzang, Great Tang Records on the Western Regions Si-yu-ki (Beal 1884) vol.1 Introduction (Beal) Yiwu (Hami))
In November 629 (Gengshen day), Li Shiji (Tonghan route), Li Jing (Dingxiang route), Chai Shao (Jinhe route) and Xue Wanche (Changwu route), all march commanders with over 100,000 men in total, divide their routes under Li Jing's orders and attack the Turks. (Zizhi Tongjian (Comprehensive Mirror) 권193 629년 항)
South Asia (3)
He went west to Kwa-chau (Guazhou); from there, with a guide, he went north and crossed a river at night (the stretch just before leaving the country). (Xuanzang, Great Tang Records on the Western Regions Si-yu-ki (Beal 1884) vol.1 Introduction (Beal) Guazhou)
The king of Gaochang (Turfan) summoned Xuanzang; the king tried to keep him in his territory, failed, and sent him on to Agni. (Xuanzang, Great Tang Records on the Western Regions Si-yu-ki (Beal 1884) vol.1 Introduction (Beal) Gaochang (Turfan))
The king of Gaochang sent Xuanzang on to Agni (Karashahr), and from there he advanced to Kucha. (Xuanzang, Great Tang Records on the Western Regions Si-yu-ki (Beal 1884) vol.1 Introduction (Beal) Agni (Karashahr))