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Short-term and long-term borrowings - Repayments of principal amounts (Details)
¥ in Thousands
Dec. 31, 2020
CNY (¥)
Short-term and long-term borrowings  
2022 ¥ 5,249
2023 4,499
2024 6,161
2025 and thereafter 6,668
Total ¥ 22,577