Tiānyuán yīàn 天元醫案 Tiānyuán Medical Case Records A Yè-school casebook of 葉桂 Yè Tiānshì seen by 葉萬青 Yè Wànqīng at 周謝庵 Zhōu Xièān’s studio in 1816 and used as a collation source for KR3ep079 Yèshì yīàn cúnzhēn.