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Huidu means rolling out experimental new features to a small subset of users for testing.

Lunzi describes tools, libraries or frameworks that have been invented or reinvented multiple times.

Chendian is not a technical term, but it is commonly used in Chinese tech companies. It means consolidating learnings from past experience.

Dapan is used to describe dashboards with various charts, where you can monitor key system metrics or business metrics in real time.

Maidian refers to embedding of tracking code to monitor and analyse user behaviour.