Bamboo flowering is known as a wonder. When was the earliest recorded bamboo flowering?

Bamboo is one of the "Four Gentlemen of Flowers" in Chinese culture. Although it is not a plant that blooms every year, it is the inevitable path for bamboo to bloom and bear fruits. It is mentioned in "Book of Jin" I have been there before, and the earliest record of bamboo flowering was in my country's "The Classic of Mountains and Seas". In the ancient Chinese traditional culture, bamboo is evergreen all year round, with distinct segments, tall and noble, symbolizing an upright and noble personality. Literati and scholars all like to praise bamboo, whether it is its tenacious vitality or its open-minded and hollow heart. Character, whose branches are bent but not broken, high-spirited and upright, etc., is the personality pursued by literati, and carries the virtues of the Chinese gentleman. There is integrity before being unearthed, and humility in the sky, and it has evolved until the bamboo finally becomes peace and peace. Blessings? Bamboo for peace? etc., but no one seems to have mentioned bamboo flowers. Doesn’t bamboo bloom? No, bamboo blooms and withers like an old whip, and grows bamboo shoots when it falls to the ground. It is another interpretation of reproduction and inheritance. In fact, many bamboo species grow slowly, taking several years or as long as ten or even decades to reach maturity. Most of the bamboo roots are already weak, and the absorption of nutrients is limited. The bamboo's nutrients begin to be poor. Bamboo will bloom and bear fruit, and then the bamboo will wither and die. The flowers will fall to the ground and grow into new shoots in the soil. This is the inheritance of bamboo life. The nutrition of bamboo also depends on the soil and climate. Bamboo is very sensitive to changes in the soil, but it takes a longer time to bloom. In the "Book of Mountains and Seas", it has been recorded: Bamboo changes roots every sixty years, and The roots will bear flowers, the flowers will bear fruit, the fruit will die, and the fruit will grow again. ?Proves that bamboo has been blooming and bearing fruits since a long time ago. In the second year of Yuankang, Emperor Hui of the Jin Dynasty, grass and bamboo all produced seeds like wheat, and in the spring of the second year, the bamboos in Brazil grew flowers.

?It is also recorded in the "Book of Jin" that the bamboo flowering is not disappearing, but it needs to wait for a longer time, or the bamboo roots are relocated, or it may be caused by abnormal climate changes or natural disasters, and even the elderly I would say it is an ominous sign. What do you think about this?