Liu Chang Filer record as of 2026-09-08. Source: SEC EDGAR Cik1843196Edgar urlhttps://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1843196Entity typeotherNameLiu Chang Filings 17 Education & Technology Group Inc. SCHEDULE 13D/A filed 2026-09-08 2026-09-08, SCHEDULE 13D/A