Salt from a thousand metres down
Shenhai well was drilled in 1835 to a depth of 1,001 metres. Its wooden derrick and boiling pans are still working.
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Shenhai well was drilled in 1835 to a depth of 1,001 metres. Its wooden derrick and boiling pans are still working.
Zigong's lanterns are built all year: wire, silk, glue and paint, with the winter festival as the deadline.