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ACQUIRED INTANGIBLE ASSETS, NET | 12 Months Ended
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Sep. 30, 2021
ACQUIRED INTANGIBLE ASSETS, NET |
ACQUIRED INTANGIBLE ASSETS, NET | 10. ACQUIRED INTANGIBLE ASSETS, NET Acquired intangible assets, net consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | September 30,
​ | ​ | 2021 | ​ | 2020
​ |  | RMB | ​ | RMB
​ | ​ | Gross | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Gross | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Carrying | ​ | Accumulated | ​ | Impairment | ​ | Net | ​ | Carrying | ​ | Accumulated | ​ | Impairment | ​ | Net
​ | ​ | Amount |  | Amortization |  | Loss |  | Balance |  | Amount |  | Amortization |  | Loss |  | Balance
Technology rights for licensed seeds |  | 71,429 | ​ | (67,655) | ​ | — | ​ | 3,774 | ​ | 71,429 |  | (66,781) | ​ | — |  | 4,648
Others |  | 4,739 | ​ | (4,652) | ​ | (87.00) | ​ | — | ​ | 4,739 |  | (4,739) | ​ | — |  | —
Total |  | 76,081 | ​ | (72,307) | ​ | (87.00) | ​ | 3,774 | ​ | 76,168 |  | (71,520) | ​ | — |  | 4,648
​ Amortization expenses for the years ended September 30, 2019, 2020 and 2021 were RMB2,893, RMB821 and RMB787, respectively. RMB–nil-, RMB–nil-, and RMB87 were charged for impairment for the years ended September 30, 2019, 2020 and 2021, respectively. Amortization expense on these intangible assets for each of the next five years is as follows: ​
​ | ​ | ​
Year ending September 30, |  | RMB
2022 |  | 555
2023 |  | 532
2024 |  | 520
2025 |  | 521
2026 |  | 521
Thereafter | ​ | 1,125
Total |  | 3,774
​ The Company enters into technology transfer and usage agreements with strategic partners and pays up-front fees for the exclusive rights to certain seed technologies. Technology rights are amortized over an average usage period of 3 to 20 years and are charged to general and administrative expenses.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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