Summary of Significant Accounting Policies - Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Recurring [Member] - CNY (¥) ¥ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Financial assets: | ||
| Investment in marketable equity security | ¥ 3,319 | ¥ 8,561 |
| Quoted price in active markets for identical assets Level 1 [Member] | ||
| Financial assets: | ||
| Investment in marketable equity security | 3,319 | 8,561 |
| Significant other observable inputs Level 2 [Member] | ||
| Financial assets: | ||
| Investment in marketable equity security | ||
| Significant unobservable inputs Level 3 [Member] | ||
| Financial assets: | ||
| Investment in marketable equity security |