{"cik":1821468,"taxonomy":"us-gaap","tag":"InventoryNet","label":"Inventory, Net","description":"Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.","entityName":"17 Education & Technology Group Inc.","units":{"CNY":[{"end":"2024-12-31","val":0,"accn":"0001193125-26-191472","fy":2025,"fp":"FY","form":"20-F","filed":"2026-04-29","frame":"CY2024Q4I"},{"end":"2025-12-31","val":15662000,"accn":"0001193125-26-191472","fy":2025,"fp":"FY","form":"20-F","filed":"2026-04-29","frame":"CY2025Q4I"}]}}