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Commitments and Contingencies - Additional Information (Details) - CNY (¥) ¥ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Commitments and Contingencies
Capital investment commitment	¥ 502,661	¥ 616,891

X

- Definition

The Maximum Amount Of Additional Capital Commitment

+ References

No definition available.

+ Details

Name:	duo_MaximumAmountOfAdditionalCapitalCommitment
Namespace Prefix:	duo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration