碧:
The character "碧" originally referred to emerald-green jade, and later extended to signify the color emerald green. In names, it often conveys a sense of vitality and vibrancy.
瑚: Coral is used metaphorically to describe a person's capability to serve in the court and govern the state with distinction.
Meaning: The name 'Bihu' evokes a sense of freshness, purity, and elegance. 'Bi' represents emerald green, symbolizing natural vitality and tranquility, while 'Hu' reminds one of coral, signifying preciousness and beauty.