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Schedule of Condensed statements of cash flows (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Condensed Financial Statements, Captions [Line Items] |  |  |
Net cash used in operating activities | ¥ (40,550) | ¥ (114,135) | ¥ (26,950)
Cash flows from investing activities |  |  |
Placement of short-term investments | (16,778) | (186,471) | (42,722)
Cash received from maturities of short-term investments | 52,202 | 172,522 | 56,071
Net cash generated from/(used in) investing activities | 35,397 | (15,600) | 12,822
Cash flows from financing activities |  |  |
Proceeds from exercise of share-based awards | 104 |  |
Cash payment for settling a dispute with a security holder |  | (3,055) |
Net cash generated from financing activities | 55,404 | 1,945 | 140,345
Effect of exchange rate changes on cash and cash equivalents and restricted cash | (2,126) | 1,870 | 2,230
Net increase/(decrease) in cash and cash equivalents and restricted cash | 48,125 | (125,920) | 128,447
Cash and cash equivalents and restricted cash at beginning of the year | 122,472 | 248,392 | 119,945
Cash and cash equivalents and restricted cash at end of the year | 170,597 | 122,472 | 248,392
Prime Impact Cayman LLC [Member] |  |  |
Cash flows from financing activities |  |  |
Proceeds from PIPE financing – Goldrock Holdings Limited |  |  | 8,609
World Dynamic Limited [Member] |  |  |
Cash flows from financing activities |  |  |
Proceeds from PIPE financing – Goldrock Holdings Limited |  |  | 93,436
Goldrock Holdings Limited [Member] |  |  |
Cash flows from financing activities |  |  |
Proceeds from PIPE financing – Goldrock Holdings Limited |  |  | 35,863
Parent Company [Member] |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net cash used in operating activities | (33,597) | (26,291) | (20,885)
Cash flows from investing activities |  |  |
Cash paid for investments in subsidiaries, VIE and subsidiaries of VIE |  |  |
Placement of short-term investments | (17,572) | (161,739) |
Cash received from maturities of short-term investments | 49,202 | 129,392 |
Net cash generated from/(used in) investing activities | 31,630 | (32,347) |
Cash flows from financing activities |  |  |
Proceeds from exercise of share-based awards | 104 |  |
Cash payment for settling a dispute with a security holder |  | (3,055) |
Net cash generated from financing activities | 104 | (3,055) | 137,908
Effect of exchange rate changes on cash and cash equivalents and restricted cash | (1,641) | 1,558 | 1,002
Net increase/(decrease) in cash and cash equivalents and restricted cash | (3,504) | (60,135) | 118,025
Cash and cash equivalents and restricted cash at beginning of the year | 58,898 | 119,033 | 1,008
Cash and cash equivalents and restricted cash at end of the year | 55,394 | 58,898 | 119,033
Parent Company [Member] | Prime Impact Cayman LLC [Member] |  |  |
Cash flows from financing activities |  |  |
Proceeds from PIPE financing – Goldrock Holdings Limited |  |  | 8,609
Parent Company [Member] | World Dynamic Limited [Member] |  |  |
Cash flows from financing activities |  |  |
Proceeds from PIPE financing – Goldrock Holdings Limited |  |  | 93,436
Parent Company [Member] | Goldrock Holdings Limited [Member] |  |  |
Cash flows from financing activities |  |  |
Proceeds from PIPE financing – Goldrock Holdings Limited |  |  | ¥ 35,863

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