You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "when did the chinese first use fingerprint as identification?" whose answer is second millennium BCE.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did the chinese first use fingerprint as identification
Useful Output:

Doc 1: It appears that the Chinese were aware of the individuality of fingerprints well over 5000 years ago. Even before the first century B.C., clay seals
Doc 2: China - 221 B.C.E.​​ the ancient Chinese were the first to use fingerprinting for identification. they would identify criminals by fingerprints
Doc 3: As early as the Qin Dynasty, the ancients had mastered the technology of fingerprint identification, began to use and slowly matured.
Doc 4: Some of the earliest uses of fingerprinting date back to 1000 BC when fingerprints were used in place of signatures on official documents.
Doc 5: People in different societies have been aware of the value of fingerprints for centuries. For example, they were used as signatures on Chinese