Cadwallon, besieged by king Osric at York,…

Emperor Taizong requests opinions from his officials as to what to do with the Eastern Turkic Khaganate's people, and it is said that the majority opinion was to move them to the modern Shandong and Henan region and scatter them within Tang prefectures to sinicize them, making them unable to reorganize.

However, there are several officials who held differing opinions whose opinions are recorded in historical records: Yan Shigu opined that the Eastern Turkic people should continued to be settled north of the Yellow River, to remain in tribal form, as vassals.

Li Baiyao opined that, specifically, letting the Eastern Turkic Khaganate's people remain north of the Yellow River but be scattered, with a member of the Eastern Turkic Khaganate's Ashina clan serving as khan, but only over the Ashina, while other tribes within the Eastern Turkic Khaganate's people be given their own chieftains, with positions equivalent to the Ashina khan; he also opined that a protector general be placed at Dingxiang to govern over them.

Dou Jing opined that the Eastern Turkic Khaganate's chieftains and people should be scattered, and that daughters of imperial clan members be given to the chieftains as wives, to better control them as vassals.

Two key opinions, given by two chancellors, emerge from the discussion: Wen Yanbo opined that the Eastern Turkic Khaganate's people should be settled in the northern prefectures within Tang borders, remaining in tribal form, on lands that were currently not settled.

Wei Zheng opined that the Eastern Turkic Khaganate's people should be outside of Tang boundaries on their own lands.

Emperor Taizong eventually accepts Wen's opinions, establishing four nominal prefectures over Ashina Shibobi's people and six nominal prefectures over Ashina Duobi's people, with two commandants governing over the people.

Ashina Sunishi and another Eastern Turkic Khaganate's prince, Ashina Simo (who, in particular, is given the Tang imperial surname Li and therefore also known as Li Simo), are created princes, and a large number of other chieftains are given general ranks; they are settled in or near Chang'an.

Emperor Taizong also gives the Eastern Turkic Khaganate's people who possess Han people as slaves ransoms and has them return those Han slaves to Tang.

Hereafter, Emperor Taizong will often requisition Turkic cavalry soldiers to supplement regular Tang troops on various campaigns, such as the 634 campaign against Tuyuhun under Li Jing, resulting in the murder of their leader (khan) Murong Fuyun in 635.

Tai Zong orders the construction of the Daming Palace in Chang'an.

He builds the summer palace for his retired father, emperor Gao Zu, as an act of filial piety.

It will serve as the royal residence of the Tang emperors for more than two hundred and twenty years.

Xueyantuo has meanwhile largely taken over the Eastern Turkic Khaganate's former territory, with most of Eastern Turkic Khaganate's former vassals submitting to it.

Yi'nan remains nominally submissive to Tang, remaining formally respectful to Emperor Taizong, while at the same time trying to affirm Xueyantuo's control over the region.

Former Eastern Turkic Khaganate's vassals Khitan, Xí, and Xĩ tribes directly submit to Tang, as does the city kingdom of Yiwu.

Xuanzang arrives in Matipura, today known as Mandawar, in 634.

Xuanzang goes east to Jalandhar in eastern Punjab later in 634, before …

…climbing up to visit predominantly non-Mahayana monasteries in the Kulu valley and turning southward again to …

…Bairat, then …

…Mathura, on the Yamuna river.

Mathura has two thousand monks of both major Buddhist branches, despite being Hindu-dominated.

Sophronius, becoming patriarch of Jerusalem, sends synodical letters to pope Honorius I and the Eastern patriarchs explaining the Orthodox belief, by renouncing Monothelitism.

Sergius, patriarch of Constantinople, seeks the support of Pope Honorius for the Monothelitic formula adopted by Emperor Heraclius a decade earlier to end the controversy between Chalcedonian and Monophysite Christians.

Honorius, specifically rejecting the Chalcedonian teaching of two wills, declares in 634 in a letter to Sergius, that Christ's dual human and divine natures did indeed operate through a single will.