v3.26.1
Operating Segment Information - ​Schedule of Revenue (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
​Schedule of Revenue [Line Items]        
Total revenue ¥ 574,120 $ 82,098 ¥ 980,650 ¥ 221,984
Chinese mainland [Member]        
​Schedule of Revenue [Line Items]        
Total revenue 574,120 82,098 302,235 221,984
Switzerland [Member]        
​Schedule of Revenue [Line Items]        
Total revenue ¥ 678,415