After we had finished the meal,we went to Tian tan,where ancient emperor used to offer sacrifice to the God above.Inside,there was an Echo Wall,as long as you say something,no matter loud enough or not,it could be heard far far away.What's more,Tian Tan was a beautiful place,we could take photos and buy all kinds of souvenires.I bought some postcard with great scenery as well,then we left After we had finished the meal,we went to Tian tan,where ancient emperor used to offer sacrifice to the God above.Inside,there was an Echo Wall,as long as you say something,no matter loud enough or not,it could be heard far far away.What's more,Tian Tan was a beautiful place,we could take photos and buy all kinds of souvenires.I bought some postcard with great scenery as well,then we left