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v3.24.1

Property and equipment, net | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Property and equipment, net | Note 6 — Property and equipment, net Property and equipment, net consist of the following:
Schedule of property and equipment, net |  |  |  |  |  |  |  |  |  |  |  |
|  | December 31, 2022 |  |  | December 31, 2023 |  |  | December 31, 2023 |
|  | RMB |  |  | RMB |  |  | USD |
Office equipment |  |  | 1,140,456 |  |  |  | 1,005,558 |  |  |  | 141,974 |
Mechanical equipment |  |  | 1,059,178 |  |  |  | 1,059,178 |  |  |  | 149,544 |
Electronic and other equipment |  |  | 2,454,537 |  |  |  | 3,167,783 |  |  |  | 447,256 |
Vehicles |  |  | 43,982 |  |  |  | 43,982 |  |  |  | 6,210 |
Subtotal |  |  | 4,698,153 |  |  |  | 5,276,501 |  |  |  | 744,984 |
Less: accumulated depreciation |  |  | (3,050,277 | ) |  |  | (3,678,367 | ) |  |  | (519,345 | )
Total |  |  | 1,647,876 |  |  |  | 1,598,134 |  |  |  | 225,639 |
Depreciation expense for the years ended December 31, 2021, 2022 and 2023 amounted to RMB 294,514, RMB 464,999 and RMB 807,722 (USD 114,624), respectively.

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