咿呀咿呀哟
[yī yā yī yā yo]
The username "Yiya Yiya Yo" seems inspired by baby-talk or onomatopoeia expressing surprise, confusion, or joy that is often simplified to childlike exclamations in Chinese culture; this may represent a fun-loving, innocent and playful nature. It also gives off a vibe that the person prefers simple, unpretentious communication akin to the sound of children learning to speak.