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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Foreign currency translation (Details)	Dec. 31, 2023 ¥ / $	Dec. 31, 2023 £ / $	Dec. 31, 2022 ¥ / $	Dec. 31, 2022 £ / $	Dec. 31, 2021 ¥ / $	Dec. 31, 2021 £ / $
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
At end of the period	7.0999	0.7847	6.8987	0.8315	6.3524	0.7419
Average rate for the period ended	7.0809	0.8039	6.7347	0.8121	6.4491	0.7327

X

- Definition

Represents annual average foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

+ References

No definition available.

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- References

No definition available.

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X

- Definition

Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479424/830-30-S99-1

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