養虎遺患

1. • Rear a tiger and court disaster. (idiom) fig. if you're too lenient with sb, he will damage you later
2. • to cherish a snake in one's bosom

Character by character

• 養(yǎng)raise
• 虎(hǔ)tiger
• 遺(yí)leave behind
• 患(huàn)suffer