深信不疑 (shēn xìn bù yí) | Meaning: to believe firmly without any doubt (idiom) | Chinese Idiom with Pinyin & Origin

without the slightest doubt毫不怀疑háo bù huái yí

to trust · to have confidence in信任xìn rèn

to see, hear and obey (idiom); to take advice · to take sb at his word言听计从yán tīng jì cóng

to believe firmly without any doubt (idiom) · absolute certainty about sth