ok,I let the island's people (some soldiers can build ships in the sea) built a ship in the sea, when ships are built out, I let the 20 soldiers boarded the ship, this time the game started lagging behind the speed. BTW: (1). When the number of buildings and soldiers began to increase, such as the construction of five to six buildings and 20 soldiers, the game became lag, the game became one of the walking speed lag, use the arrow keys to move the game screen when the game becomes lagging. (2). the lack of action of some animals and I ordered his soldiers to attack the forest bison and wild elephants and wild elephant, these animals do not run the action or walking action while the action did not attack, they only parallel on the map move, I forgot to tell you: There is also a lack of wild zebra; for example running, walking movements of these animals need these actions. (3). move warships and fishing boats at sea when the ship's sides and stern should spray.