v3.25.0.1
Fair Value Measurement - Schedule of Liabilities that are Measured and Recorded at Fair Value (Details)
¥ in Thousands, $ in Thousands
Jun. 30, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
CNY (¥)
Schedule of Liabilities that are Measured and Recorded at Fair Value [Line Items]          
Warrant liability ¥ 1,632 ¥ 3,952 $ 557    
Fair Value, Inputs, Level 3 [Member]          
Schedule of Liabilities that are Measured and Recorded at Fair Value [Line Items]          
Warrant liability   3,952   ¥ 24,376
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]          
Schedule of Liabilities that are Measured and Recorded at Fair Value [Line Items]          
Warrant liability      
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]          
Schedule of Liabilities that are Measured and Recorded at Fair Value [Line Items]          
Warrant liability      
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]          
Schedule of Liabilities that are Measured and Recorded at Fair Value [Line Items]          
Warrant liability   ¥ 3,952   ¥ 24,376