柿子挑软的捏

1. • lit. it's the soft persimmons that people choose to squeeze (idiom)
2. • fig. it's the weak (i.e. 软柿子 ruǎnshìzi) who get picked on
3. • bullies pick soft targets

Character by character

• 柿(shì)persimmon
• 子(zi)noun suffix, as in 椅子 yǐzi "chair"
• 挑(tiāo)carry on a shoulder pole
• 软(ruǎn)soft
• 的(de)marks possession and modification
• 捏(niē)hold between the thumb and fingers