Cement

When the Chinese migration started in the late 1600's Taiwan was a forrested island, exporting lumber for wooden ships, houses, ... that has stopped. After 300 years of population growth, most of the remaining trees are in protected parks or
on inaccessible mountains. The building material of choice is cement.

Here we have a construction area "walled off" with a cement fence that can be assembled and disassembled like leggo blocks.

What gets me about cement, is that it is an unforgiving material. You make a mistake and it makes you pay. If you don't plan in advance you can wind up with a lot of gerryrigged solutions. Adding wires can be a problem.

But in Taiwan there are an array of tools for muscling the cement into shape.

The roads are in constant activity with cement being broken up and removed. And then a new cement structure added for future generations to fight with. It
all requires special equipment.

But sometimes it comes down to a guy with a jackhammer.

Even for the homeowner, the smallest local hardware store stocks a supply of hammers and sledges that would rival Home Depot or Eagle.