diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 75f82045..a0b799d7 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -1410,11 +1410,7 @@ void Human::DeadDrop()
             #ifdef DEBUG
             return false;
             #else
-            if (JsonDataMgr::Instance()->channel == kTouTiaoChannelId) {
-                return false;
-            } else {
-                return skin->skin_id != 0;
-            }
+            return skin->skin_id != 0;
             #endif
         };
 
diff --git a/server/gameserver/mapinstance.cc b/server/gameserver/mapinstance.cc
index 081691e5..0bba8dc0 100644
--- a/server/gameserver/mapinstance.cc
+++ b/server/gameserver/mapinstance.cc
@@ -22,6 +22,8 @@
 
 #include "roommgr.h"
 
+#include "navmesh.pb.h"
+
 static const int NAV_ERROR_NEARESTPOLY = -2;
 
 static const int NAV_ERROR = -1;
@@ -83,6 +85,22 @@ void MapInstance::Init()
     if (current_uniid_ >= FIXED_OBJECT_MAXID) {
         A8_ABORT();
     }
+    {
+        a8::XPrintf("begin\n", {});
+        FILE *fp = fopen(("main3d_mapHeight.txt"), "rb");
+        assert(fp);
+        fseek(fp, 0, SEEK_END);
+        size_t file_size = ftell(fp);
+        char *p = (char*)malloc(file_size);
+        fseek(fp, 0, SEEK_SET);
+        fread(p, 1, file_size, fp);
+
+        navmesh::HeightList list;
+        list.ParseFromArray(p, file_size);
+        free(p);
+        fclose(fp);
+        a8::XPrintf("end\n", {});
+    }
     {
         navmesh_ = dtAllocNavMesh();
         FILE *fp = fopen((mt::MetaMgr::Instance()->GetResDir() + "map4.bin").c_str(), "rb");
diff --git a/server/gameserver/mapinstance.h b/server/gameserver/mapinstance.h
index efcfe4a3..11886ab8 100644
--- a/server/gameserver/mapinstance.h
+++ b/server/gameserver/mapinstance.h
@@ -5,6 +5,11 @@
 
 const int MAX_POLYS = 256;
 
+struct HeightInfo
+{
+
+};
+
 class Entity;
 class Obstacle;
 class MapService;
@@ -61,6 +66,8 @@ class MapInstance : public std::enable_shared_from_this<MapInstance>
 
     std::vector<int> poly_ext_datas_;
 
+    std::vector<HeightInfo> height_datas_;
+
     std::string map_tpl_name_;
     const mt::Map* map_meta_ = nullptr;
     MapService* map_service_ = nullptr;