diff --git a/examples/examples1/example_rkme.py b/examples/examples1/example_rkme.py
index 33c8819..f7842b3 100644
--- a/examples/examples1/example_rkme.py
+++ b/examples/examples1/example_rkme.py
@@ -7,7 +7,7 @@ if __name__ == "__main__":
     for i in range(10):
         data_X[i, i] = np.nan
     spec1 = specification.utils.generate_rkme_spec(X=data_X, gamma=0.1, cuda_idx=-1)
-    spec2 = specification.rkme.RKMESpecification()
+    spec2 = specification.rkme.RKMEStatSpecification()
     spec1.generate_stat_spec_from_data(data_X)
     spec1.save("spec.json")
 
diff --git a/learnware/learnware/base.py b/learnware/learnware/base.py
index 644d4c4..3be20b9 100644
--- a/learnware/learnware/base.py
+++ b/learnware/learnware/base.py
@@ -8,12 +8,11 @@ from ..utils import get_module_by_module_path
 
 
 class Learnware:
-    def __init__(self, id: str, name: str, model: Union[BaseModel, dict], specification: Specification, desc: str):
+    def __init__(self, id: str, name: str, model: Union[BaseModel, dict], specification: Specification):
         self.id = id
         self.name = name
         self.model = self._import_model(model)
         self.specification = specification
-        self.desc = desc
 
     def _import_model(self, model: Union[BaseModel, dict]) -> BaseModel:
         """_summary_
diff --git a/learnware/market/serial.py b/learnware/market/serial.py
index 0a9cf19..ded9027 100644
--- a/learnware/market/serial.py
+++ b/learnware/market/serial.py
@@ -5,7 +5,7 @@ from typing import Tuple, Any, List, Union, Dict
 
 from .base import BaseMarket, BaseUserInfo
 from ..learnware import Learnware
-from ..specification import RKMEStatSpecification
+from ..specification import RKMEStatSpecification, Specification
 
 
 class SerialMarket(BaseMarket):
@@ -104,11 +104,18 @@ class SerialMarket(BaseMarket):
         if (not os.path.exists(model_path)) or (not os.path.exists(stat_spec_path)):
             raise FileNotFoundError("Model or Stat_spec NOT Found.")
 
-        id = "%08d" % (self.count)
-        stat_spec = RKMEStatSpecification()
-        stat_spec_path.load(stat_spec_path)
-
-        return str(self.count), True
+        id = "%08d"%(self.count)
+        rkme_stat_spec = RKMEStatSpecification()
+        rkme_stat_spec.load(stat_spec_path)
+        specification = Specification(semantic_spec=semantic_spec)
+        specification.upload_stat_spec("RKME", rkme_stat_spec)
+        model_dict = {"model_path":model_path, "class_name":"BaseModel"}
+        new_learnware = Learnware(id=id, name=learnware_name, 
+                                model=model_dict, specification=specification)
+        self.learnware_list[id] = new_learnware
+        self.count += 1
+
+        return id, True
 
     def search_learnware(self, user_info: BaseUserInfo) -> Tuple[Any, List[Learnware]]:
         def search_by_semantic_spec():
diff --git a/learnware/specification/base.py b/learnware/specification/base.py
index f223ffd..3b6df74 100644
--- a/learnware/specification/base.py
+++ b/learnware/specification/base.py
@@ -16,7 +16,7 @@ class BaseStatSpecification:
 
 
 class Specification:
-    def __init__(self, semantic_spec=None):
+    def __init__(self, semantic_spec:dict=None):
         self.semantic_spec = semantic_spec
         self.stat_spec = {}  # stat_spec should be dict
 
@@ -25,6 +25,9 @@ class Specification:
 
     def get_semantic_spec(self):
         return self.semantic_spec
+    
+    def upload_semantic_spec(self, new_semantic_spec: dict):
+        self.semantic_spec = new_semantic_spec
 
     def update_stat_spec(self, name, new_stat_spec: BaseStatSpecification):
         self.stat_spec[name] = new_stat_spec