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Contract Liabilities - Schedule of Receipts in Advance from Customers (Details) - CNY (¥)
¥ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Jan. 01, 2020
Deferred revenue      
Total contract liabilities ¥ 23,872 ¥ 24,901 ¥ 16,485
Current 23,506 24,314 16,049
Non-current 366 587 436
Subscriptions and Licensing      
Deferred revenue      
Total contract liabilities 12,050 13,827 13,294
Smart music learning      
Deferred revenue      
Total contract liabilities 11,784 11,074 3,191
Music events and performances      
Deferred revenue      
Total contract liabilities ¥ 38 ¥ 0 ¥ 0