姐的个性你学不来
[jiĕ de gè xìng nĭ xué bù lái]
'Big Sister's personality can't be imitated by you'. Here 'big sister' is sometimes used humorously to express a sense of seniority or maturity in an informal way, often with a sense of confidence or independence. The net user may be emphasizing a strong personality which others should not or cannot replicate.