Jia Polygonum, also known as passerby Jia, was named Polygonum after the missing wood in the Five Elements. Polygonum is a double tone, which also means a tall tree and hopes that it will be tenacious. Therefore, among the many words, Dad and Mom Jia, who make a living growing Polygonum, gave our dear boy Jia this very agreeable name - Birdman. However, something even more unfortunate happened. Another pronunciation of this word was discovered, and it evolved into a passerby.