Hehe, an underwater tunnel huh? How about to build an underwater tunnel between the mainland and Hainan[0]? Oh wait somebody mentioned it[1] at 2010, and some

Hehe, an underwater tunnel huh? How about to build an underwater tunnel between the mainland and Hainan[0]? Oh wait somebody mentioned it[1] at 2010, and someone else did it[2] again at 2018. Well, then good luck to that tunnel. [0] https://en.wikipedia.org/wiki/Qiongzhou_Strait https://en.wikipedia.org/wiki/Qiongzhou_Strait [1] (Reference) https://en.wikipedia.org/wiki/Qiongzhou_Strait#cite_note-Sohu-1 https://en.wikipedia.org/wiki/Qiongzhou_Strait#cite_note-Soh... (2010) [2] (Reference) https://en.wikipedia.org/wiki/Qiongzhou_Strait#cite_note-4 https://en.wikipedia.org/wiki/Qiongzhou_Strait#cite_note-4 (2018)