Question 1

What is a fen in Chinese measurement?

Accepted Answer

A fen (分) is 1/10 of a cun, equal to 0.333 cm or 3.33 mm. The smallest commonly used unit in the traditional Chinese system.

Question 2

How do fen relate to other Chinese units?

Accepted Answer

10 fen = 1 cun, 100 fen = 1 chi, 1000 fen = 1 zhang. Used in traditional crafts and medicine.

Question 3

Is this conversion factor exact?

Accepted Answer

Metric-to-metric conversions are exact (1 km = 1000 m). Imperial-to-metric factors like 1 inch = 2.54 cm are exact by international agreement.

Question 4

Why do some countries use different units?

Accepted Answer

Historical reasons - the metric system spread from France after 1795. The US, UK, and a few others retained older systems. Science uses metric worldwide.

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