diff --git a/README.md b/README.md
index 19dccced3a055570ad84e3cb7175c1ea542e848b..0092b99966a8020b8d6fa3d5098d0a7009f24817 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
+
 # 📌 Introduction
 
 Ubutils is the basic DFX tool of ubus, including setub, lsub and ub.ids.
@@ -94,9 +95,7 @@ Kernel version: openeuler OLK-6.6
 
 # 📄 Connection and contribution
 
-Issue feedback: Submit an issue in the openeuler community
-Code contribution: Follow Huawei's kernel coding standards and submit patches via Gerrit
-
+Issue feedback: Submit an issue in the openeuler community.
 
 # 📌 Copyright Notice
 
diff --git a/include/ubutils.h b/include/ubutils.h
index 34f53f02777961b93d107515eb5e57da0c28fb90..afc46e6f06cade52732aeb4aab667d0b02b9c8b0 100644
--- a/include/ubutils.h
+++ b/include/ubutils.h
@@ -13,7 +13,7 @@
 #include <stdint.h>
 #include <stdbool.h>
 
-#define UBUTILS_VERSION "1.0.1.rc1"
+#define UBUTILS_VERSION "1.0.1"
 #define UB_SYS_DIR_LEN 1024
 #define OBJBUFSIZE 1024
 #define OBJNAMELEN 1024
diff --git a/lsub.man b/lsub.man
index e26617a9d145b9ddae4e1926e9e086f90bbb4818..a75fe30d2e5ce9faa7c1483408c53972852999af 100644
--- a/lsub.man
+++ b/lsub.man
@@ -22,6 +22,22 @@ Show detailed help on available options. This option should be used stand-alone.
 .TP
 .B -t
 Show a topo-like diagram containing all entities, ports and connections between them.
+For example topo like:
++----------------+               +-------+
+|Bus controller0 |port0:---:port0| UBPU0 |
++----------------+               +-------+
++----------------+               +-------+
+|Bus controller0 |port1:---:port0| UBPU1 |
++----------------+               +-------+
+Bus controller0 entity num: [00001] or "00001"( using "" if it appears again)
+UBPU0 entity num: [00002]
+UBPU1 entity num: [00003]
+port0: 000
+port1: 001
+it will show:
+---[00001]-+-000-000---[00002]---000-000---"00001"
+           \-001-000---[00003]---000-001---"00001"
+
 .TP
 .B -l
 Show UB entities list. This list can display the connection between MUE(management UB entity) and