This photo taken on July 10, 2026 shows a view of the construction site of the Jiangjunling tunnel along the Zhuhai-Zhaoqing high-speed railway in south China's Guangdong Province. (Xinhua/Deng Hua)

A 3,500-meter long tunnel, the Jiangjunling tunnel along the Zhuhai-Zhaoqing high-speed railway, was successfully drilled through on Friday.

This aerial drone photo taken on July 10, 2026 shows a view of the Jiangjunling tunnel along the Zhuhai-Zhaoqing high-speed railway in south China's Guangdong Province. (Xinhua/Deng Hua)

This photo taken on July 10, 2026 shows a view of the construction site of the Jiangjunling tunnel along the Zhuhai-Zhaoqing high-speed railway in south China's Guangdong Province. (Xinhua/Deng Hua)

This aerial drone photo taken on July 10, 2026 shows a view of the Jiangjunling tunnel along the Zhuhai-Zhaoqing high-speed railway in south China's Guangdong Province. (Xinhua/Deng Hua)