Complex sentence: Fruit pit carving began in the Spring and Autumn period (BC.770-BC.476), but the earliest record was found in the Song Dynasty (960-1279) over about 1000 years ago.
Split into simpler sentences: Fruit pit carving began in the Spring and Autumn period (BC.770-BC.476). The earliest record was found in the Song Dynasty (960-1279), about 1000 years ago.