10月21日，一名小朋友在第十一屆中國（蕪湖）科普產品博覽交易會上體驗載人潛水器模擬座艙。當日，第十一屆中國（蕪湖）科普產品博覽交易會在安徽省蕪湖市舉行。[新華社記者 杜宇 攝]

A child tries a simulated cabin of the deep-sea manned submersible Fendouzhe (Striver) during the 11th China (Wuhu) Popularized Science Products Exposition in Wuhu, east China's Anhui Province, Oct. 21, 2023. The expo kicked off here on Saturday. (Xinhua/Du Yu)