yangtze

But China has two such plains: the Yellow River defines the north, and the Yangtze defines the south.

Nice try, but Yangtze River happens to be at the dividing line of north/south, not strictly but close.

Shenzhen and the Pearl Delta region...the Yangtze River delta region, they were all opened up as SEZs under Deng.

Coupled with the Yangtze River Delta and the Bohai Economic Rim, with active policy to to connect the constituent cities.

From the bridge, the packets travel onto the internet (here embodied by the Yangtze River).

Ebay may be a shark in the ocean, but I am a crocodile in the Yangtze River.

Rice is grown north of the Yangtze also and the border seems to be on the hills between provinces such as Hubei and Henan.

Of course, there's other factors: the US military control of the world's oceans, and the under-utilization of the Mississippi compared to the Yangtze or Ganges.

In the early 1970s, liver cancer killed nearly one in 10 adults in Qidong, China, a region located at the mouth of the Yangtze River.

The article makes a good case for why agriculture could be more important than sunshine: the sun doesn't care about the Yangtze River as a border.

Last Chance to See has a fun bit about listening for dolphins in the Yangtze by taking a regular microphone and putting a condom over it.

There have long been obvious differences between north and south china, but the Yangtze isn't the border between North and South, it's the heart of the South.

This from the original article seems to support your "invasion stopped at Yangtze" theory more than a "rice/wheat divide" theory.

Needham suggests the necessity was even greater in China because "The coasts of China, however, have tides of considerable range, for example, about twelve feet in spring off the mouth of the Yangtze.

Episode Synopsis: Porter Erisman, the author of “Alibaba’s World” and filmmaker of “Crocodile in the Yangtze”, joined us to offer an insider’s perspective to the early days of Alibaba, now the largest ecommerce company in the world.

The Chinese are fully aware of the "north-south" differences themselves, although they often attribute it to other reasons, such as legacy effects of numerous mongol/manchu/other "barbarian" invasions from the north through out China's history, which often times were stopped around the Yangtze River.

There's certainly racism towards Chinese/Chinese-Americans, with Little Yangtze[1] being a prime example, for example; for their own in-universe reasons.

Think of the poor college students in southern china who don't have heat at all in their dorms (the government, in their wisdom, said heat isn't needed south of the Yangtze).