Nonsense of Noah

9.5. China
China had a well documented civilization in existance in the year after the flood. How is this possible if there were only 8 people alive at that time?

Please view this page List of Neolithic Cultures of China

There you will see that at the time of the flood, China was experiencing its 16th (of 22 prehistoric) named culture, the Liangzhu culture.

The influence of the Liangzhu cluture spread as far as modern-day Jiangsu, Shanghai, and Shandong Provinces.

But, according to the Ark story, there were only 8 people alive on this date.

Explanation please.