tā / zài / lùn wén / zhōng / xiáng xì / tǎo lùn / le / yīn yáng jiā / de / wǔ xíng / xué shuō

他在论文中详细讨论了阴阳家的五行学说。

In his paper, he discussed in detail the Five Elements theory of the Yin-Yang school.