The Ming and Qing dynasties saw the appearance of the Four Famous Ink Stones—Duan Ink Stone, She Ink Stone, Tao Ink Stone and Chengni Ink Stone.

明清时期出现了四大名砚——段砚、歙砚、陶砚和澄泥砚。

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But another doctor, Duan Qing, explained at the briefing that would be impossible for there to be any such cases of AIDS, Hepatitis B, Hepatitis C, or syphilis because there is a lengthy incubation period.

CNN: Chinese doctors say some claims of needle-stabbings are mistaken