{"schema_version":"secwatch.filing_event.v1","accession":"0001683168-23-007086","form_type":"8-K","ticker":"QSJC","cik":"0001753391","company_name":"TANCHENG GROUP CO., LTD.","filed_at":"2023-10-12T23:59:59+00:00","discovered_at":"2026-05-14T18:03:30.314180+00:00","generated_at":"2026-06-10T00:51:32.018078+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Tancheng Group appoints new director, CFO (CEO's mother), and Secretary; Yu Yang becomes Chairman","bullets":["Appointed Longjiao Li, 35, co-founder of Shenzhen Qianhai Huaxin Investment, as director; Board now has two members.","Yu Yang appointed Chairman; remains CEO, President, Secretary, Treasurer.","Caixia Zhang (Yu Yang's mother) appointed CFO; Yu Yang resigns as CFO.","Ping Li appointed Secretary; previously secretary of Qiansui Media.","Disclosed related-party transactions: 700k shares assigned to Zhang Caixia Limited in Feb 2023."],"urls":{"canonical":"https://secwatch.observer/filing/0001683168-23-007086","json":"https://secwatch.observer/filing/0001683168-23-007086.json","markdown":"https://secwatch.observer/filing/0001683168-23-007086.md","text":"https://secwatch.observer/filing/0001683168-23-007086.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1753391/000168316823007086/0001683168-23-007086-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1753391/000168316823007086/tancheng_i8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-10T00:51:32.018078+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"3e404436d5","claim":"Yu Yang resigned as Chief Financial Officer at TANCHENG GROUP CO., LTD..","evidence_excerpt":"Upon Ms. Caixia Zhang’s appointment, Mr. Yu Yang will automatically resign as the Company’s Chief Financial Officer.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1753391/000168316823007086/0001683168-23-007086-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"64d04308a5","claim":"Yu Yang was appointed as Chairman of the Board at TANCHENG GROUP CO., LTD..","evidence_excerpt":"appointed Mr. Yu Yang, currently the Company’s Chief Executive Officer, President, Chief Financial Officer, Secretary, and Treasurer, as the Company’s Chairman of the Board.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1753391/000168316823007086/0001683168-23-007086-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chairman of the Board"}],"fact_type":"executive_change"},{"claim_id":"654da27a08","claim":"Caixia Zhang was appointed as Chief Financial Officer at TANCHENG GROUP CO., LTD..","evidence_excerpt":"appointed Ms. Caixia Zhang as the Company’s Chief Financial Officer","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1753391/000168316823007086/0001683168-23-007086-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"a782c5cb49","claim":"Longjiao Li was appointed as director at TANCHENG GROUP CO., LTD..","evidence_excerpt":"appointed an additional director, Ms. Longjiao Li, to the Board.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1753391/000168316823007086/0001683168-23-007086-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}