That car accident caused his internal organs to bleed.
Tips
mistakes
Don't confuse 脏 (zàng, organ) with 脏 (zāng, dirty) — same character, different pronunciation and meaning. 内脏 (nèizàng) = internal organs; 肮脏 (āngzāng) = filthy.
culture
In Chinese medicine, the 五脏 (wǔzàng, five organs) are heart, liver, spleen, lungs, and kidneys. Eating animal 内脏 (offal) is common in Chinese cuisine — dishes like 毛肚 (tripe) and 腰花 (kidneys) are popular.