Invention convention China finals ceremony begins in Zhengzhou
By Shi Baoyin and Qi Xin in Zhengzhou, Henan | chinadaily.com.cn | Updated: 2025-07-29 21:49
Li Peirong contributed to this story.
By Shi Baoyin and Qi Xin in Zhengzhou, Henan | chinadaily.com.cn | Updated: 2025-07-29 21:49
Li Peirong contributed to this story.