Congratulations to the many descendants. katydid: the name of an insect that lays many eggs; yan: continuation; qing: celebration. From "The Book of Songs - Zhou Nan - Katydid": "Katydid feather, inquiring.

This is a symbol of prosperity for the family in the olden days. Although ordinary people were overburdened with the task of nurturing their children, they preferred to break their spines to bring them up. As for the king's family, glory and wealth, concubines, consorts, individual emperors have had dozens of children, but more emperors lack of children girls. One of the reasons for this is that there are many consorts, and they are jealous of each other, and the sons they give birth to are in danger of being killed, or even abused.

This kind of thing is common in the palace. Zhou Nan - Katydid (周南-螽斯), on the other hand, praised the fact that the consorts in the palace at that time lived in harmony*** and thus had many descendants. The psalm uses a metaphorical approach, saying:They are like a swarm of katydids and locusts, getting along with each other in a good way. With such a virtue comes good fortune, and they are like the katydid that produces ninety-nine locusts, giving birth to a great number of descendants.