text: Maayo oolɗuɗe ‘Yellow River, ha waadiwol leydi Sin ɓeɗo rema muuri be gabbe ferefere wakkati duuɓi 7000 BCE (duuɓi jamanu); waadiwol Yangtze fuɗɗi aawugo maaroori haa ragare duuɓi 8000 BCE (duuɓi jamanu).