What is the age of the unearthed cultural relics in Hemudu, Yuyao, Zhejiang?

Rice seeds and wooden paddles 7,000 years ago were unearthed in Hemudu, Yuyao, Zhejiang, which shows that Chinese civilization, especially rice culture, has a long history of origin. Most of the cultural relics unearthed in Hemudu are marked around 6000 ~ 4000 years, and a large number of exquisite objects show that it was once the center of civilization.