萌面心晴萌面怪兽
[méng miàn xīn qíng méng miàn guài shòu]
'Cute Face Sunny Heart' / 'Adorable face Monster': A paradoxical expression juxtaposing an adorable appearance with inner complexity. It conveys duality, showing someone might look sweet but have a strong, unconventional, or mischievous character.