How many people have Trisomy in Australia?

Of the three three-body problems, 4.2 billion people live in Australia, with a population density of more than 500 people per square kilometer, which is not much higher than the population density of Japan before the Great Immigration.

During the immigration process, humans also moved a large number of agricultural factories to Australia. Genetically modified crops, combined with artificially generated super light, can grow dozens of times faster than traditional crops. In the days to come, food will be gradually supplied.

With enough food, society can be relatively stable and people can still survive.

But the premise of all this is that there must be a large amount of electricity. Seven water droplets will explode all nuclear power plants in Australia. The use of any modern technology, including electricity, is prohibited. The reservation is strictly sealed and isolated from the outside world. .

Once the power is cut off, the crops that are absorbing artificial ultraviolet X-rays in the cultivation tanks will rot within a day or two. The existing food reserves are only enough to feed 4.2 billion people for a month. Of course, everything is a scene set in the novel.