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Validate an ID card and extract birth date, gender, age, region, zodiac and constellation.
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Convert an amount to standard Chinese capital numerals, precise to jiao/fen with proper rounding.
Detect carrier and number-segment type, validate format, with batch lookup.
Convert between solar and lunar dates both ways, with ganzhi, zodiac and traditional festivals.
Validate a Unified Social Credit Code per GB 32100-2015; parse the registering department and region.
Validate a card number with the Luhn algorithm and detect UnionPay, Visa, Mastercard and more.
Compute take-home pay, social insurance and individual income tax with annual progressive rates, bonus included.