昂首挺胸

head high, chest out (idiom); to keep up one's spirits / in fine mettle (of animal)

to lift / to raise / to raise one's head / high / high spirits / soaring / expensive

head high / in high spirits / to raise one's head (e.g. of neighing horse)

head / chief / first (occasion, thing etc) / classifier for poems, songs etc

straight / erect / to stick out (a part of the body) / to (physically) straighten up / to support / to withstand / outstanding / (coll.) quite / very / classifier for machine guns

variant of 胸[xiong1]

chest / bosom / heart / mind / thorax