Court orders construction of the Eastern Capital
The Zizhi tongjian records the Sui court commissioning Yang Su, Yang Da and Yuwen Kai to construct the Eastern Capital.
What this does and does not establish
Pinned revision 1502733, line 96. The preceding year's edict at line 74 is an earlier action; this record concerns the third-month commission, not completion.
- Read through an AI working translation.
- Region
- East Asia
- Theme
- Politics and institutions
- Kind of record
- Placed in a year. A source places this in one year. It is listed under that year; no day precision is invented.
How it is dated
- Date reference
- Sui Daye 1, third month, dingwei
- How we use it
- Year-level placement is limited to the dated source entry.
The date reference is this project’s reading of the source’s date. It may give an era name, a reign or a calendar in a normalised form rather than in the source’s own words; the dating notes say what the source prints.
Dating notes from the research record
Read zztj180.wikitext lines 70–106, including the first-month renaming of the era and neighboring third-month wushen and xinhai entries. Headers in sinica-604-12-31.html and sinica-605-12-31.html identify Julian 604-12-31 as Sui Wendi Renshou 4 month 12 day 5 and Julian 605-12-31 as Sui Yangdi Daye 1 month 11 day 16. Daye 1 month 3 lies between them, within Julian 605. Both anchors are Sui; Yangdi's accession occurred in Renshou 4, while Daye began the following first month.
File names and line numbers in these notes, and in the limits above, refer to the project’s retained copies of the cited sources. Names such as calendar_headers are the project’s calendar look-ups, and “the investigator” is the research step that prepared the record.
Sources and quoted text
Line and character numbers under “Location” refer to the project’s retained copy of the source. For database rows, “Edition” names the batch of rows that was fetched together.
Source 1 · Supports the statement
Zizhi tongjian
Sima Guang and collaborators
Quoted text (Classical Chinese)
三月，丁未，詔楊素與納言楊達、將作大匠宇文愷營建東京AI working translation into English; not official or authoritative
In the third month, on dingwei, an edict ordered Yang Su, together with Chief Counsellor Yang Da and Director of Palace Construction Yuwen Kai, to construct the Eastern Capital.
Source credit and reuse conditions recorded for this source: Zizhi tongjian, juan 180; Wikisource contributors https://zh.wikisource.org/w/index.php?oldid=1502733, CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/); project translation, adapted and share alike where applicable.
Exact source version
03e5e745849eb101eb26b7d2f394b2025b3f75580cb9f9d17c37935e108bcdf8Checks and changes
Source checked 2026-11-05. An independent AI evidence review supports this bounded, attributed wording. That review does not guarantee historical truth. How records are checked
No correction has been made to this record’s statement or limits.
Revision s601_east_601_605_605_7
Exact revision fingerprint
9633a5c0bd9cb0c7514bb125b76251c4553a32268b5f73df88fd5906d6c4b077