diff --git a/examples/rtss-cg/main.go b/examples/rtss-cg/main.go
index fdc68d9..1028da8 100644
--- a/examples/rtss-cg/main.go
+++ b/examples/rtss-cg/main.go
@@ -48,7 +48,6 @@ func main() {
 	//
 	simWorld.AddSystem(system.NewSwitchSystem())
 	simWorld.AddSystem(system.NewTrainSystem())
-	//simWorld.AddSystem(system.NewCiSystem())
 	simWorld.AddSystem(system.NewSectionSystem())
 	//
 	simWorld.StartUp()
diff --git a/examples/rtss-cg/system/ci_system.go b/examples/rtss-cg/system/ci_system.go
deleted file mode 100644
index 7e11e4f..0000000
--- a/examples/rtss-cg/system/ci_system.go
+++ /dev/null
@@ -1,50 +0,0 @@
-package system
-
-import (
-	"fmt"
-	"strings"
-
-	"github.com/yohamta/donburi/filter"
-	"joylink.club/ecs"
-	"joylink.club/ecs/examples/rtss-cg/simulation"
-)
-
-// 把长轨道当成物理区段，列车当成一个点，来计算物理区段的占用空闲状态
-type CiSystem struct {
-	//轨道查询
-	linkQuery *ecs.Query
-	//列车查询
-	trainQuery *ecs.Query
-}
-
-func (me *CiSystem) Update(w ecs.World) {
-	//key linkId,value bool
-	linkOccupyMap := make(map[string]bool)
-	me.trainQuery.Each(w, func(e *ecs.Entry) {
-		train := simulation.ComTrainState.Get(e)
-
-		if len(strings.TrimSpace(train.LinkId)) > 0 {
-			linkOccupyMap[train.LinkId] = true
-		}
-	})
-	//轨道是否被列车占用
-	me.linkQuery.Each(w, func(e *ecs.Entry) {
-		link := simulation.ComLinkState.Get(e)
-		if linkOccupied, ok := linkOccupyMap[link.Id]; ok {
-			link.Occupied = linkOccupied
-		} else {
-			link.Occupied = false
-		}
-	})
-	me.linkQuery.Each(w, func(e *ecs.Entry) {
-		link := simulation.ComLinkState.Get(e)
-		fmt.Println("==>>轨道(", link.Id, ") 上有车(", link.Occupied, ")")
-	})
-}
-
-func NewCiSystem() *CiSystem {
-	return &CiSystem{
-		linkQuery:  ecs.NewQuery(filter.Contains(simulation.ComLinkState)),
-		trainQuery: ecs.NewQuery(filter.Contains(simulation.ComTrainState)),
-	}
-}