掏擢胃肾tāo zhuó wèi shèn

upturn one’s stomach and kidney
❍ 他形容孟郊的苦吟竟至使用上“刿目鉥心”，“～”的辞句。(郭沫若《李白与杜甫》164) Han Yu (768—824),a well-known Tang Dynasty essayist,in an epitaph he wrote for his friend the poet as having“pricked his eyes and heart” and “upturned his stomach and kidney” in his search for the right words for his poem.