There is a good saying, the world is expensive, and bamboo gives birth to grandchildren. What does it mean?

There is a saying that when the Ming Dynasty comes, orchids are blessed for you and bamboo gives birth to grandchildren, which means to congratulate others on their contributions. From the couplet "Red plum bears seeds, green bamboo gives birth to grandchildren". The meaning is as follows: First, homophonic meaning. The seed of red plum is actually plum, that is, the fruit of plum, which can be written as a seed (meaning the seed of some plants, the same seed). Seed setting: To grow to maturity and produce seeds. Seed and son are synonyms of the same sound. After being written as a son, they can have the meaning of a son, and having a son means having a son. Green bamboo gives birth to grandchildren, which is actually bamboo shoots, the buds that bamboo first grows out of the soil. Raw bamboo shoots: give birth to new bamboo shoots. Bamboo shoots and the sun are homophonic, which means the sun. Having grandchildren means "sons have grandchildren, grandchildren have sons, sons have sons, and sons have grandchildren." Children and grandchildren are infinite. "