2. There is an anecdote about the origin of the name Long Tuzhu:1In the mid-8th century, British travel expert Coase? When Thomson traveled to Africa, he happened to see many dark-skinned girls with dragon spit beads on their chests, one black and one white, which aroused great interest, so he picked the seedlings and brought them back for trial planting. At that time, botanists thought he was the first discoverer, so he was named after him. By the end of19th century, Mali began to manage this kind of flowers and plants, and renamed it "Pearl Pagoda" by itself, which is better than people's name.