Low is called the bench table, highly with city wall difference not many, but outside the prominent wall, all around has the crenel, is place which the patrol stands sentry.

低墙台，高度与城墙 相差不多但突出墙，四周有垛口，是巡逻放哨地方。

The city is square, the fence is 12 meters or so high, build by laying bricks or stones of outside and total brick, build on the wall have crenel, there is moat outside the wall.

城为方形,墙高12米左,全部砖砌,墙上筑有垛口,墙有护城河。