diff --git a/docs/sbs/en/thread/code/event_message_test.py b/docs/sbs/en/thread/code/event_message_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..5c3a7ae3ae5baf8e0783b21907e5fb3446beddaa
--- /dev/null
+++ b/docs/sbs/en/thread/code/event_message_test.py
@@ -0,0 +1,67 @@
+from event_message import Event
+import utime
+"""
+1. Initialize event
+2. Initialize event manager
+3. Register event to event manager
+4. Start event manager
+5. Add event manager
+6. Dispatch data
+"""
+from event_message import Event, EventManager
+# Initialize event and event manager
+event = Event("test")
+event_manager = EventManager()
+# Register event
+event_manager.register_event(event)
+# Start event manager
+event_manager.start()
+# Add event manager, you can comment different event types by patches. 
+@event.add_handler_via()
+def handler(**kwargs):
+    em = kwargs["event_message"]
+    """
+    The first way to get data
+    kwargs:{
+        "event_message":EventMessageObject
+    }
+    Four attributes are invloved in EventMessageObject
+        event_name
+        msg
+        event
+        callback
+        It provides the method to get by itself and by combination. As for getting by combination, following methods are available, the model_to_dict()will get the dictionary of combination. 
+        {
+            'name': 'test',
+            'event': event_object,
+            'msg': '1111',
+            'callback': None
+        }
+    """
+    
+    print("handler1 {}".format(kwargs))
+    """
+    1. Method to get the first attribute
+        # Get the event name
+            event_name = em.event_name
+        # Get the event message
+            msg = em.msg
+        # Get the original event
+            ev = em.event
+        # None Get the transmitted callback, it is None by default if there is no transmission. 
+            cb = em.callback
+    """
+    """
+    2. The way to get the second attribute value(Recommended)
+        data_map = em.model_to_dict()
+            {
+                'name': 'test',
+                'event': event_object,
+                'msg': '1111',
+                'callback': None
+            }
+    """
+# Asynchronous dispatch data instead of block 
+while True:
+    event.post(message="1111")
+    utime.sleep(2)
\ No newline at end of file
diff --git a/docs/sbs/en/thread/code/queue_test.py b/docs/sbs/en/thread/code/queue_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..11a5d1741b5ebb35f6e9ef2f05ca5b97e43479cc
--- /dev/null
+++ b/docs/sbs/en/thread/code/queue_test.py
@@ -0,0 +1,18 @@
+import _thread
+from queue import Queue
+import utime
+# Initialize queue
+q = Queue(maxsize=100)
+def get():
+    while True:
+# The q.get will wait until get the message. Whenever the q.put is executed, the q.get will delete block and carry on if influenced by relevant signal. 
+        item = q.get()
+        print(item)
+# Start the thread and wait for message in which place. 
+_thread.start_new_thread(get,())
+# put the message to queue
+q.put(1)
+utime.sleep(2)
+q.put(2)
+utime.sleep(2)
+q.put(3)
\ No newline at end of file
diff --git a/docs/sbs/en/thread/code/sys_bus_test.py b/docs/sbs/en/thread/code/sys_bus_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..7da5ba938d3036db221a262c6357c4705aa5551c
--- /dev/null
+++ b/docs/sbs/en/thread/code/sys_bus_test.py
@@ -0,0 +1,31 @@
+import sys_bus
+import utime 
+def cb_callback(topic, msg):
+    print(topic, msg)
+# Support registering multiple subscription functions by one topic. 
+sys_bus.subscribe("topic1", cb_callback)
+sys_bus.subscribe("topic2", cb_callback)
+sys_bus.subscribe("topic3", cb_callback)
+
+
+" The subscriber will receive message after publishing"
+sys_bus.publish("topic1", " What printed here is the message published by topic 1")
+utime.sleep(2)
+sys_bus.publish("topic2", " What printed here is the message published by topic 2")
+utime.sleep(2)
+sys_bus.publish("topic3", " What printed here is the message published by topic 3")
+utime.sleep(2)
+
+print(sys_bus.sub_table())
+# Return {"topic1": set(cb_callback...)}
+utime.sleep(2)
+print(sys_bus.sub_table("topic1"))
+# Return set(cb_callback...)
+
+sys_bus.unsubscribe("topic1", cb_callback)
+# As suscribing callback has been cancelled above, the following publication won' t slide into the former callback. That means: the subscribed message can still be received, however, there is no callback.  
+sys_bus.publish("topic1", "What printed here is the message published by topic 1")
+
+sys_bus.unsubscribe("topic1")
+# As the subscription of topic 1 has been cancelled, the following publication won't receive any message. 
+sys_bus.publish("topic1", " What printed here is the message published by topic 1")
\ No newline at end of file
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diff --git a/docs/sbs/en/thread/media/queue_04.jpg b/docs/sbs/en/thread/media/queue_04.jpg
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diff --git a/docs/sbs/en/thread/queue.md b/docs/sbs/en/thread/queue.md
index a683e0033fa44ffae2028c2e20e1fcd29aced21d..e1a0af72d9d36306349ce987481b3a7e6f5e5f17 100644
--- a/docs/sbs/en/thread/queue.md
+++ b/docs/sbs/en/thread/queue.md
@@ -1,8 +1,9 @@
 ## Revision History
 
-| Version | Date       | Author     | Description     |
-| ------- | ---------- | ---------- | --------------- |
-| 1.0     | 2021-09-30 | David.Tang | Initial version |
+| Version | Date       | Author     | Description                          |
+| ------- | ---------- | ---------- | ------------------------------------ |
+| 1.0     | 2021-09-30 | David.Tang | Initial version                      |
+| 1.1     | 2022-02-16 | David.Tang | Translate Chinese operation pictures |
 
 ## Foreword
 
@@ -56,7 +57,7 @@ sys_bus.publish("topic1", " What printed here is the message published by topic
 
 Here is the result. 
 
-![queue_02](media/queue_02.png)
+![queue_02](media/queue_02.jpg)
 
 Explanation
 
@@ -87,7 +88,9 @@ utime.sleep(2)
 q.put(3)
 ```
 
-Here shows the result. ![queue_03](media/queue_03.jpg)
+Here shows the result.
+
+ ![queue_03](media/queue_03.jpg)
 
 Explanation
 
diff --git a/docs/sbs/en/thread/thread.md b/docs/sbs/en/thread/thread.md
index 899569f2aff3e936d972daf4f954157731a017b8..dcbe1b63c545840bd8abce000cfedd030d77747f 100644
--- a/docs/sbs/en/thread/thread.md
+++ b/docs/sbs/en/thread/thread.md
@@ -1,8 +1,9 @@
 ## Revision history
 
-| Version | Date       | Author     | Description     |
-| ------- | ---------- | ---------- | --------------- |
-| 1.0     | 2021-09-16 | David.Tang | Initial version |
+| Version | Date       | Author     | Description                          |
+| ------- | ---------- | ---------- | ------------------------------------ |
+| 1.0     | 2021-09-16 | David.Tang | Initial version                      |
+| 1.1     | 2022-02-16 | David.Tang | Translate Chinese operation pictures |
 
 ## Foreword
 
@@ -14,11 +15,11 @@ Thread is the function implementation on software level; as for the hardware,  e
 
 ## SW design 
 
-The function of thread module is to provide the method to make new thread and mutex. For more details, please refer to the link: [thread](https://python.quectel.com/wiki/#/zh-cn/api/pythonStdlib?id=_thread-%e5%a4%9a%e7%ba%bf%e7%a8%8b).
+The function of thread module is to provide the method to make new thread and mutex. For more details, please refer to the link: [thread](https://python.quectel.com/wiki/#/en-us/api/pythonStdlib?id=_thread-multithreading-support).
 
 ## Interaction 
 
-Interact with EC600S-CN via QPYcom. Please refer to the screen-shot for more details
+Interact with EC600U-EU via QPYcom. Please refer to the screen-shot for more details
 
 ```python
 >>> import _thread
@@ -38,8 +39,9 @@ False
 
 Note：
 
-3. The reason to execute command ”import_thread'' is to make the ***_thread*** visible in current space.
-4. Only execute "import_thread" command in module can the function and variate in ***_thread*** be used. 
+​	1.The reason to execute command ”import_thread'' is to make the ***_thread*** visible in current space.
+
+​	2.Only execute "import_thread" command in module can the function and variate in ***_thread*** be used. 
 
 ## Download and verify
 
@@ -122,7 +124,7 @@ The figure displayed HW connection:
 
 （1）Run *example_thread_file.py* in QPYcom .
 
-![thread_02(E)](media\thread_02(E).png)
+![_thread_02](media/_thread_02.jpg)
 
 （2）Since two threads are conducted simultaneously, when writing data via UART, it is available to transmit data to EC600U-CN serial interface. (The following figure just displays that writing and reading are conducted simultaneously; however, the detailed outputting sequence of log is decided by manual transmission time.) As the next figure implies, during the third and fourth interval when writing data to EC600U-CN, it transmits "QuecPython" to EC600U-CN via TTL-to-USB.