First notebook entry: Introducing myself

I am Phil. Few years ago back, I flew over across the sea from an island to a the Mainland 1 to learn knowledge about herbs and accupunctureneedles. Now I have got what I need to carry arround the knowledge and plan to fly again to a place where people there will be are interested in the medical skills I have. what I am going to show them.

1.  Good way of expressing of flying to Taiwan to Mainland China.  However, not everyone in the world know what exactly you mean; only those who know Asian politics.   I prefer to write something like this,  "I flew across the sea, from the Island of Taiwan to Mainland China..."