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Its hairspring, mainspring, ruby bearings and a few other parts were sourced from Switzerland.

A native of Shanghai, Sun has become a virtuoso of the soup dumpling, a snack that requires the meticulous, hairspring balance of a seven-jewel watch.

It also features a patented blue Parachrom hairspring that is 10 times more precise than a traditional hairspring, protecting the watch from shocks.

It is intended to be the first member of a family of movements incorporating both the DIAMonSIL escapement and an adjustable oscillator fitted with a silicium hairspring.

The steel hairspring having no compensating qualities, either grows stronger or weaker with changes in temperature.