Infer ext rebase

[jinminxi104]

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Motivation

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Modification

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BC-breaking (Optional)

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Use cases (Optional)

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Checklist

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2. The modification is covered by complete unit tests. If not, please add more unit tests to ensure the correctness.
3. If the modification has a dependency on downstream projects of a newer version, this PR should be tested with all supported versions of downstream projects.
4. The documentation has been modified accordingly, like docstring or example tutorials.