Correct

铁嘴

/ tiě zuǐ /
Strokes

Example

As a Noun

glib/eloquent tongue

1
Tiězuǐgāng
铁嘴钢牙

iron lips and steel teeth—having a ready and eloquent tongue

As a Noun

precise in one's inference or judgement

As a Noun

holding on to one's own views and refusing to change