襟怀坦白

1. • open and candid (idiom) not hiding anything
2. • ingenuous
3. • openhearted
4. • unselfish
5. • magnanimous
6. • broad-minded

Character by character

• 襟(jīn)lapel
• 怀(huái)surname Huai
• 坦(tǎn)flat
• 白(bái)surname Bai