不说话就不会惹人嫌
[bù shuō huà jiù bù huì rĕ rén xián]
Not speaking so as not to annoy others'. The nickname describes a personality trait of being introverted or quiet due to fear of upsetting someone inadvertently when conversing. This could relate deeply to someone experiencing social anxiety and prefers staying mum rather than taking chances on saying wrong things.