Followup: I continued teaching my daughter fractions and decimals which had two consequences: she is now in the top maths group which is taught by a different teacher, but now she is the dumb kid in a group a smart kids.
The stunning scenery on Shengshan Island is the result of the houses and outbuildings being slowly consumed by nature. The seaside village now lies empty because it was more economical for the fishermen to move and work on the mainland where catch could easily be transported and sold.
When a great flood tide submerged large parts of the coast in 1362, Husum more or less became a harbour town overnight. The locals seized the opportunity, establishing a market square and watching in delight as their village became a thriving centre of trade.