One of his favorite such systems was the I Ching, an ancient Chinese divination text.

他最喜欢的此类系统之一是易经，一种古老的中国占卜文本。

Then, once they had a better understanding of the disease, Tu and her team returned to Beijing and started looking for remedies in ancient Chinese medical texts.

在他们对这种疾病有了更好的理解之后，屠呦呦和她的团队回到北京，开始在中国古代医学文献中寻找治疗方法。