grinning face with big eyes → 咧嘴笑的脸，大眼睛

In the English expression vocabulary class, we learned the phrase "grinning face with big eyes", which refers to the expression of big eyes grinning and expressing happiness and surprise.

In social English class, the teacher taught us to use this expression in English chat to express the surprise of receiving a gift.

The foreign language teacher asked: "In English online language, what is the difference between this big-eyed grin expression and the ordinary grin expression?" "This is a cultural test center.