diff --git a/algoim/organizer/organizer.hpp b/algoim/organizer/organizer.hpp
index e63fcc7..34803b4 100644
--- a/algoim/organizer/organizer.hpp
+++ b/algoim/organizer/organizer.hpp
@@ -346,6 +346,19 @@ void build(const Scene& scene, const Node& node, std::vector<Node> leaves)
         }
 
         if (any(mark == uvector3(2, 2, 2))) {
+            if (all(mark == uvector3(2, 2, 2))) {
+                // fully containing cases
+                for (int i = 0; i < CHILD_NUM; ++i) {
+                    tensor3 subPoly(nullptr, poly.ext());
+                    bernstein::deCasteljau(poly, subNodes[i].min, subNodes[i].max, subPoly);
+                    if (bernstein::uniformSign(subPoly) == -1) {
+                        subNodes[i].polyFullyContainedIndices.emplace_back(polyIntersectIndex);
+                    } else {
+                        subNodes[i].polyIntersectIndices.emplace_back(polyIntersectIndex);
+                    }
+                }
+                continue;
+            }
             for (int subIdx = 0; subIdx < CHILD_NUM; ++subIdx) {
                 // intermediateNodes[lastIdx + subIdx].polyIntersectIndices.emplace_back(poly);
                 // intermediateNodes[lastIdx + subIdx].min = nowNodeMin;
@@ -357,6 +370,8 @@ void build(const Scene& scene, const Node& node, std::vector<Node> leaves)
         int zeroCount = numOfZero<3>(mark);
         if (zeroCount == 0) {
             // mark has -1 or 1 only
+            real nodeMidVal = bernstein::evalBernsteinPoly(poly, nodeMid);
+            if (mark(0) == 2 && mark(1) == 1 && mark(2) == 1) {}
             subNodes[binaryToDecimal(mark, -1)].polyIntersectIndices.emplace_back(polyIntersectIndex);
         } else if (zeroCount == 1) {
             // poly related to 2 subcells
@@ -371,7 +386,14 @@ void build(const Scene& scene, const Node& node, std::vector<Node> leaves)
         }
     }
     // launch subdivision in subcells
-    for (subIdx = 0; subIdx < CHILD_NUM; ++subIdx) { build(scene, subNodes[subIdx], leaves); }
+    for (subIdx = 0; subIdx < CHILD_NUM; ++subIdx) {
+        subNodes[subIdx].polyFullyContainedIndices.resize(subNodes[subIdx].polyFullyContainedIndices.size()
+                                                          + node.polyFullyContainedIndices.size());
+        subNodes[subIdx].polyFullyContainedIndices.insert(subNodes[subIdx].polyFullyContainedIndices.end(),
+                                                          node.polyFullyContainedIndices.begin(),
+                                                          node.polyFullyContainedIndices.end());
+        build(scene, subNodes[subIdx], leaves);
+    }
     // TODO: 考虑fully contain 问题
 }
 }; // namespace algoim::Organizer
diff --git a/algoim/quadrature_multipoly.hpp b/algoim/quadrature_multipoly.hpp
index 1dd5df6..7f333a2 100644
--- a/algoim/quadrature_multipoly.hpp
+++ b/algoim/quadrature_multipoly.hpp
@@ -807,7 +807,7 @@ struct ImplicitPolyQuadrature {
         // Apply primary base integral
         k_active = k;
         base.integrate(strategy, q, integrand);
-
+				// situation the 
         // If in aggregate mode, apply to other dimensions as well
         if (type == OuterAggregate) {
             for (int i = 0; i < N - 1; ++i) {