XML 29 R11.htm IDEA: XBRL DOCUMENT
v3.25.1

Prepayments | 12 Months Ended
--- | ---
Dec. 31, 2024
Prepayments [Abstract] |
Prepayments |
4. | Prepayments
Prepayments consist of the following:
|  | As of December 31, |
|  | 2023 |  |  | 2024 |
|  | RMB |  |  | RMB |
Prepayments – inventories and processing fee |  |  | 14,645,763 |  |  |  | 3,011,819 |
Prepayments – design fees |  |  | 7,162,700 |  |  |  | — |
Prepayments – others |  |  | 2,577,547 |  |  |  | 1,594,247 |
Total |  |  | 24,386,010 |  |  |  | 4,606,066 |

X
- Definition The entire disclosure for prepayments. + References No definition available. + Details
Name: | na_PrepaymentsTextBlock
Namespace Prefix: | na_
Data Type: | dtr:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_PrepaidExpenseCurrentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration