Shenzhen-Zhongshan undersea tunnel connected(1/5)

Photo shows the construction site of Shenzhen-Zhongshan Link of the Guangdong-Hong Kong-Macao Greater Bay Area in Shenzhen, south China's Guangdong Province, June 11, 2023. (Photo: China News Service/Chen Jimin)

The final joint of the undersea tunnel was docked with the E24 tube on the east side on Sunday, marking the closure of the world's longest and widest undersea tunnel after five years of construction.

A vessel carrying the last undersea tube berths at the construction site of Shenzhen-Zhongshan Link of the Guangdong-Hong Kong-Macao Greater Bay Area in Shenzhen, south China's Guangdong Province, June 11, 2023. (Photo: China News Service/Chen Jimin)

Journalists work at the construction site of Shenzhen-Zhongshan Link of the Guangdong-Hong Kong-Macao Greater Bay Area in Shenzhen, south China's Guangdong Province, June 11, 2023. (Photo: China News Service/Chen Jimin)

Journalists work at the construction site of Shenzhen-Zhongshan Link of the Guangdong-Hong Kong-Macao Greater Bay Area in Shenzhen, south China's Guangdong Province, June 11, 2023. (Photo: China News Service/Chen Jimin)

Journalists work at the construction site of Shenzhen-Zhongshan Link of the Guangdong-Hong Kong-Macao Greater Bay Area in Shenzhen, south China's Guangdong Province, June 11, 2023. (Photo: China News Service/Chen Jimin)