If you don’t think China is advanced in some areas …

First they built the longest glass bridge, now this:

https://www.cnn.com/travel/article/china-longest-underwater-highway-tunnel/index.html

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Northwest · M

It needs to be 5 times longer to beat the "Chunnel". What's impressive is the cost: $1.5B. The Chunnel construction started in 1988 and finished in finished in 1993.

The Chunnel cost $21B in 1993 $s. Adjusted for inflation, it would probably be about $30B+.