Restore damaged ecosystems by planting trees on land where forests have been cut down
There are at least 50 reasons why you can't.
The only other detail I want to mention just now is that China is NOT
directly opposite the US. An area in the Indian Ocean is.
So if you were digging to China, you would have to go off at a skew,
NOT through the center of the Earth.
Tectonic plates in the earth sliding
Sun moon and earth are barely ever aligned.
Because there's really just one big ocean. A fish would be able to travel ANYWHERE in it