diff --git a/assets/Script/RainbowRules.ts b/assets/Script/RainbowRules.ts
index d179a1c..b1089ce 100644
--- a/assets/Script/RainbowRules.ts
+++ b/assets/Script/RainbowRules.ts
@@ -1,7 +1,8 @@
 export const RAINBOW_COLOR = 100;
 export const RAINBOW_CAPACITY = 30;
 export const RAINBOW_CELL_ENERGY = 3;
-export const RAINBOW_CAST_SECONDS = 0.3;
+// 临时放慢飞行以便测试；飞行结束后才裁切方块，正式时长为 0.3 秒。
+export const RAINBOW_CAST_SECONDS = 1.5;
 
 export interface RainbowCell { x: number; y: number; }
 export interface RainbowCut {
diff --git a/tools/test-rainbow-streak.cjs b/tools/test-rainbow-streak.cjs
index d56b44c..804b2dc 100644
--- a/tools/test-rainbow-streak.cjs
+++ b/tools/test-rainbow-streak.cjs
@@ -178,7 +178,7 @@ function controllerFixture(blocks = [block(), block()]) {
     return { controller, map, bottle, applied, blocks };
 }
 
-test('first press excludes the whole dragged group; .3 s lock retains finger without catch-up movement', () => {
+test('first press excludes the whole dragged group; 1.5 s flight keeps input locked until the cut', () => {
     const f = controllerFixture(); const first = f.blocks[0];
     first.isTouch = true; first.node.parent = new Node(); first.node.setPosition(30, 40);
     f.map.touchIng = true;
@@ -186,8 +186,10 @@ test('first press excludes the whole dragged group; .3 s lock retains finger wit
     assert.equal(f.controller.casting, true); assert.equal(f.controller.selection.block, f.blocks[1]);
     assert.equal(f.map.pause, undefined); assert.equal(f.controller.energy.value, 0);
     f.controller.capture(first, { getLocation: () => v2(100, 200) }, false);
-    f.controller.update(.29); assert.equal(f.applied.length, 0);
+    f.controller.update(1.49); assert.equal(f.applied.length, 0);
+    assert.equal(f.controller.casting, true); assert.equal(f.controller.shield.active, true);
     f.controller.update(.01); assert.equal(f.applied.length, 1); assert.equal(f.controller.casting, false);
+    assert.equal(f.controller.shield, null);
     assert.deepEqual(plain(first.relative_Position), { x: -70, y: -160 });
     assert.equal(first.touchDelta.mag(), 0); assert.equal(first.isTouch, true);
 });
@@ -198,8 +200,8 @@ test('release during flight settles once; lost target consumes cast; only dragge
     first.touchEnd = () => { ends++; first.isTouch = false; };
     f.controller.onPress(first, { getLocation: () => v2() });
     f.controller.capture(first, { getLocation: () => v2(4, 5) }, true);
-    f.map.blocks.pop(); f.controller.update(.3); f.controller.update(.3);
-    assert.equal(ends, 1); assert.equal(f.applied.length, 0); assert.ok(f.controller.energy.value < 1);
+    f.map.blocks.pop(); f.controller.update(rules.RAINBOW_CAST_SECONDS); f.controller.update(rules.RAINBOW_CAST_SECONDS);
+    assert.equal(ends, 1); assert.equal(f.applied.length, 0); assert.equal(f.controller.energy.value, 2 * rules.RAINBOW_CAST_SECONDS);
     const linked = controllerFixture(); linked.blocks[0].teamBlocks = linked.map.blocks;
     linked.controller.onPress(linked.blocks[0], { getLocation: () => v2() });
     assert.equal(linked.controller.energy.value, 0); assert.equal(linked.controller.casting, false);
@@ -406,7 +408,7 @@ test('normal casts wait for release animation; a prior partial hammer hit does n
     f.controller.update(.1); assert.equal(f.controller.casting,false);
     exit.active = false; f.controller.update(.1); assert.equal(f.controller.casting,true);
     f.map.pause = true; f.controller.update(10); assert.equal(f.applied.length,0);
-    f.map.pause = false; f.controller.update(.3); assert.equal(f.applied.length,1);
+    f.map.pause = false; f.controller.update(rules.RAINBOW_CAST_SECONDS); assert.equal(f.applied.length,1);
 });
 
 test('browser startup has ten wins before entering GameScene; disabling test mode restores normal defaults', () => {