Daily Chinese Idiom Guessing Game
To be extremely cautious and careful, as if afraid of making a mistake.
翼翼严肃谨慎。本是严肃恭敬的意思。现形容谨慎小心，一点不敢疏忽。
《诗经·大雅·大明》维此文王，小心翼翼。”
She walked across the icy path carefully, step by step.