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Short-term and long-term borrowings (Details 1) - CNY (¥) ¥ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Debt Instrument [Line Items] |  |  |
Total long-term borrowings |  | ¥ 0 | ¥ 2,932
7.5% SPD Silicon Valley Bank loan Revolving loan II due on June 28, 2019 |  |  |
Debt Instrument [Line Items] |  |  |
Principal Amount | [1] | ¥ 9,945 | ¥ 9,945
Interest rate per annum | [1] | 7.50% | 7.50%
Total long-term borrowings | [1] | ¥ 0 | ¥ 2,932
[1] | The Group was granted an RMB20.0 million credit facility that will expire on June 30, 2019 for general corporate purposes. There into, RMB10.0 million is allocated to a term loan facility and RMB10.0 million is a revolving loan credit facility. The credit facility was guaranteed by the Company.

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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