不孕不育的高发已被数据证明。2021年发布的《柳叶刀中国女性生殖、孕产妇、新生儿、儿童和青少年健康特邀重大报告》显示，中国不孕率从2007年的12%增加到2020年的18%。
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他直言反對「安靜復興」理論：「一般來說，我們通常專注於自己的研究，不會去評論其他機構的工作。」
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Leonardo da Vinci is usually credited with conducting the first systematic study of friction in the late 15th century, a subfield now known as tribology that deals with the dynamics of interacting surfaces in relative motion. Da Vinci's notebooks depict how he pulled rows of blocks using weights and pulleys, an approach that is still used in frictional studies today, as well as examining the friction produced in screw threads, wheels, and axles. The authors of this latest paper used an experimental setup similar to da Vinci's.