The Los Angeles Times reported in 2012:
More than 30 million Chinese people live in caves ….
In contrast, the global human popular during the Stone Age was 5 million people.
So there are 6 times more people living in caves in China today than lived in caves worldwide during the Stone Age.
It just means that there are a lot more people alive today than there were 10,000 years ago. And that China has a huge population … almost 279 times as large as the global population during the Stone Age.