Yuan Longping and Hybrid Rice
（杂交水稻）
•谢 •谢
中国传统医学从业者整体诊断方法。他们 认为病人的全身:他/她的饮食、年龄、习惯、 情感、生活方式和生活环境。他们特别关 注疾病的原因而不是症状
• Listening, smelling, inquiring, observing, and feeling the pulse (望、闻、问、切) are four diagnostic (诊断 的) methods in traditional Chinese medicine.
• In the Yuan Dynasty, the method of making gunpowder was introduced to the Arab world and Europe, bringing a series of revolutions to weapon manufacturing, as well as to stratagem (战略) and tactics (战术) on the battlefield.
Do you know the process of • In the Eastern Han Dynasty, a court official paper-making?
named Cai Lun (蔡伦) used inexpensive materials such as bark, hemp (麻头), rags, fishnet, wheat stalks (麦杆) and other materials to make paper, known as Cai lun Paper (蔡侯纸). • The materials were soaked, cut into pieces, boiled with plant ash, washed, and grounded with a pestle in a mortar (杵和臼). The mixture was then poured evenly on a flat surface to dry, or baked to become paper. It was relatively cheap, light, thin, durable and more suitable for brush writing.
