How many years is the quintessence of our country in history?

5,000 years of Chinese characters, 600 years of Kunqu Opera, 300 years of Peking Opera, 5,000 years of sandals, 4,000 years of stone mills in grinding bean curd, and 3,000 years of stinky tofu. 5,000-year brush, 6,000-year tortoise shell divination, 5,000-year carriage, 6,000-year Hanfu, 300-year cheongsam, 3,000-year ink painting, 2,500-year gunpowder, 5,000-year compass, 2,500-year papermaking, 1500 national mantra, 4,500-year calligraphy, 6,600. . . . . . . . . . . Is that enough? ! ! ! !