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v3.21.1

CONCENTRATIONS (Tables) | 12 Months Ended
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Dec. 31, 2020
Concentrations |
Summary of the Debtors who Accounted for 10% or More of the Group's Consolidated Accounts Receivable , Prepaid and Other Current Assets, Other Non-current Assets |
|  | As of December 31, |
|  | 2019 |  | 2020 |
Debtors |  | RMB |  | % |  | RMB |  | % |
Accounts receivable |  |  |  |  |  |  |  |  |
Company A |  | 2,089 |  | 12 | % | 3,145 |  | 15 | %
Prepaid and other current assets |  |  |  |  |  |  |  |  |
Company B |  | 49,800 |  | 37 | % | 49,800 |  | 42 | %
Company C |  | 35,000 |  | 26 | % | 35,000 |  | 30 | %
Other non-current assets |  |  |  |  |  |  |  |  |
Company D |  | 42,211 |  | 59 | % | 89,929 |  | 65 | %
Company E |  | 10,773 |  | 15 | % | 13,723 |  | 10 | %

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