Catalpa bungeana was the key tree to determine the harvest of crops in ancient times. That is to say, when Catalpa bungeana blooms and crops mature, such as flax and oats, Catalpa bungeana blooms very luxuriantly, which is also given the meaning of code name good luck.
Catalpa also symbolizes love. Spring is coming, many boys and girls will witness each other's sincere feelings under catalpa, and some will pour out their inner feelings and secrets through catalpa to harvest sweet and delicious love.