Scond , Menzied points that chinese ships in the 1400s used very distinctive anchors that were round stones with a hole in the middle .
Second , Menzied points out that Chinese ships in the 1400 's used very distinctive anchors that were round stones with a hole in the middle . Second , Menzied points out that Chinese ships in the 1400s used very distinctive anchors that were round stones with a hole in the middle . Secondly , Menzied points out that Chinese ships in the 1400 's used very distinctive anchors that were round stones with a hole in the middle . Second , Menzied points out that Chinese ships in the 1400s used very distinctive anchors that were round stones with a hole in the middle .