不費吹灰之力

1. • as easy as blowing off dust
2. • effortless
3. • with ease

Character by character

• 不(bù)no
• 費(fèi)surname Fei
• 吹(chuī)blow
• 灰(huī)ash
• 之(zhī)(possessive particle, literary equivalent of 的 de)
• 力(lì)surname Li