What do you mean by convex and concave?

"Convex and concave" literally means rural.

The widespread use of this word represents the attitudes and views of thousands of China students and immigrants living in Australia towards this country, which is literally derogatory. Australia is an English village, so Australia is really too rustic and unadorned. China is developing rapidly, but there are not so many prosperous high-rise buildings in Australia.

The word "convex and concave" means "Australia with slow natural development". Basically, some Chinese media in Australia always use the word "China" in their headlines when introducing how students, graduates and immigrants view their Australia. The word "convex and concave" represents the self-confidence and patriotism of young people in China with the continuous development of China.

The geographical environment of Australia

Australia is located between the South Pacific Ocean and the Indian Ocean, and consists of islands and overseas territories such as Australia and Tasmania. It faces the Coral Sea and tasman sea in the Pacific Ocean in the east, and the Indian Ocean and its marginal seas in the north, west and south. The mainland covers an area of 7.69 million square kilometers, with a length of 3,700 kilometers from north to south and a width of 4,000 kilometers from east to west. Australia is the sixth largest country in the world.

The topography of the Australian mainland can be divided into three different terrain distribution areas: east, middle and west. The Australian continent is located in the Indian Ocean plate, so there are few tall landforms formed by plate movement. The geological age of the mainland mountainous plateau is very long. After a long period of external force, the surface of the Australian mainland is a relatively undulating plain, and the overall elevation is not high, with an average elevation of only about 350 meters.

The above contents refer to Baidu Encyclopedia-Australia.