Biubiu means continuous emission. Biu means to emit love, and the actions and sounds of love can express goodwill to a great extent. The expression of biubiu is very vivid. Almost as soon as I see this word, the scene of sending love can appear in my mind. It is easy to see this word and action in some modern videos and variety shows. It is very cute to simulate the sound and make the launching action at the same time. Especially when some little girls make them, they are often made into emoticons. People often use this emoticons when chatting on some chat platforms. The combination of sound and movement will have a better effect.