Futoushi Tunnel of Guangzhou-Shanwei Railway drilled through

Aerial photo shows an exit of Futoushi Tunnel of Guangzhou-Shanwei Railway in Huidong County of Huizhou, south China's Guangdong Province, April 22, 2022. The Futoushi tunnel of Guangzhou-Shanwei Railway was drilled through on Friday. The 206.2km-long Guangzhou-Shanwei Railway with a maximum speed of 350 km per hour is expected to be put into operation in 2023. (Xinhua/Liu Dawei)

Construction vehicles enter the Futoushi Tunnel of Guangzhou-Shanwei Railway in Huidong County of Huizhou, south China's Guangdong Province, April 22, 2022. The Futoushi tunnel of Guangzhou-Shanwei Railway was drilled through on Friday. The 206.2km-long Guangzhou-Shanwei Railway with a maximum speed of 350 km per hour is expected to be put into operation in 2023. (Xinhua/Liu Dawei)

Construction vehicles enter the Futoushi Tunnel of Guangzhou-Shanwei Railway in Huidong County of Huizhou, south China's Guangdong Province, April 22, 2022. The Futoushi tunnel of Guangzhou-Shanwei Railway was drilled through on Friday. The 206.2km-long Guangzhou-Shanwei Railway with a maximum speed of 350 km per hour is expected to be put into operation in 2023. (Xinhua/Liu Dawei)

Workers are seen at the construction site of Futoushi Tunnel of Guangzhou-Shanwei Railway in Huidong County of Huizhou, south China's Guangdong Province, April 22, 2022. The Futoushi tunnel of Guangzhou-Shanwei Railway was drilled through on Friday. The 206.2km-long Guangzhou-Shanwei Railway with a maximum speed of 350 km per hour is expected to be put into operation in 2023. (Xinhua/Liu Dawei)

Workers are seen at the construction site of Futoushi Tunnel of Guangzhou-Shanwei Railway in Huidong County of Huizhou, south China's Guangdong Province, April 22, 2022. The Futoushi tunnel of Guangzhou-Shanwei Railway was drilled through on Friday. The 206.2km-long Guangzhou-Shanwei Railway with a maximum speed of 350 km per hour is expected to be put into operation in 2023. (Xinhua/Liu Dawei)