Not the earliest, but the most important: It has been confirmed that oracle bone writings were used in the late Shang dynasty, about 1200 BC in the Julian calendar, or about 3200 years ago.
年代不是最早，但意義重大經過考證，甲骨文是商代晚期使用的文字，約在西元前一千二百年間，距今約三千二百多年左右。