Most of posts are very old-I read all the old posts and it cost be about 4 hrs time.
First there is a new metro line 10 at the airport both stops at terminal 2 and 3. Be aware the north train station has two sides a north Square and south Square.You cannot go from south sq to north Square my walking. We had to take a 20 min taxie ride. A shuttle bus goes between squares but if u don’t speak chines forget finding it. All high speed trains to Chengdu leave from north Square. Most metro maps on line are out of date. Don’t make our mistake take line 3. Hopefully this with save u from making the same mistakes I made