The Atlantic Ocean via Continental Ice, pre clovis[Think Picard].
S. America has findings going back 30K bce, S. Carolina at the Topper site some 50k, bce.
As of now, then only 'things' from China[India, Nepal as well]that I know are the Red Panda, only occurring[found remains] in Washington and Tennessee.
Indeed!
They were going where no man had gone before!