diff --git a/manual/README.md b/manual/README.md
index 4d3da97..cfe100a 100644
--- a/manual/README.md
+++ b/manual/README.md
@@ -2,20 +2,10 @@
 
 **SeaSearch** is a lightweight search engine will replace ElasticSearch as the default search engine, built on open source search engine ([ZincSearch](https://zincsearch-docs.zinc.dev/)) implemented in Go language. 
 
-Why use **SeaSearch**:
+## SeaSearch vs. ElasticSearch:
 
-- **Problems of ElasticSearch**:
-    - Not designed for large number of indexes (like one index per library)
-        - Need to search entire storage when searching inside a library
-        - Need to filter out results that the user has permissions to acces
-    - Can become slow when you have ~billion of files to search
-    - Heavyweight Java program
-    - Upgrade often requires rebuilding index
-
-- **How about SeaSearch**:
-    - Lightweight and can support one index per library
-    - API compatible with ElasticSearch
-    - Architecture Highlights
-        - Cloud-native: can use S3 as storage (for single-node or cluster)
-        - Shared storage: in a cluster, nodes use S3 as shared storage and store index metadata in etcd
-        - Failover: node switching is easy thanks to shared storage architecture. ES replicates data between the nodes so consistency is more complex.
\ No newline at end of file
+- **Lightweight**: SeaSearch implemented in Go language, which is more lightweight than ElasticSearch the heavyweight Java program
+- **Single Index per Library**: SeaSearch can search entire storage inside a libary and filter out the results with access permissions of the user, as ElasticSearch does not support
+- **Good Compatibility**: API compatible with ElasticSearch
+- **Support S3 Storage**: SeaSearch can use S3 as storage
+- **Easier Shared Storage in a cluster**: ElasticSearch replicates data between the nodes so consistency is more complex
diff --git a/manual/api/seasearch_api.md b/manual/api/seasearch_api.md
index 1adccb1..5750b17 100644
--- a/manual/api/seasearch_api.md
+++ b/manual/api/seasearch_api.md
@@ -4,7 +4,12 @@
 
 SeaSearch uses Http Basic Auth for permission verification, and the API request needs to carry the corresponding token in the header.
 
-Generate basic auth through this tool: [http://web.chacuo.net/safebasicauth](http://web.chacuo.net/safebasicauth)
+```
+# headers
+{
+  'Authorization': 'Basic <basic auth token>'
+}
+```
 
 ## User management
 
diff --git a/manual/config/README.md b/manual/config/README.md
index 756643f..ca0865c 100644
--- a/manual/config/README.md
+++ b/manual/config/README.md
@@ -33,44 +33,6 @@ ZINC_S3_PATH_STYLE_REQUEST=<your s3 style request path>
 ZINC_S3_AWS_REGION=<your s3 AWS region>
 ```
 
-## Cluster Configurations
-
-### Basic Configurations
-
-```shell
-# default none for standalone deployment, optional to cluster, must be cluster for cluster deployment
-ZINC_SERVER_MODE=
-
-# cluster id，need to be globally unique
-ZINC_CLUSTER_ID=<your cluster id>
-
-ZINC_ETCD_ENDPOINTS=<your etcd address> 
-ZINC_ETCD_USERNAME=<your etcd username>
-ZINC_ETCD_PASSWORD=<your etcd password>
-```
-
-### Proxy Configurations
-If the current node is a proxy node, the term `ZINC_SERVER_MODE` has to be set as **proxy** and the `ZINC_ETCD_ENDPOINTS` has to be pointed (i.e., =127.0.0.1:2379).
-
-```shell
-ZINC_CLUSTER_PROXY_LOG_DIR=/opt/seasearch/data/log 
-ZINC_CLUSTER_PROXY_HOST=0.0.0.0
-ZINC_CLUSTER_PROXY_PORT=4082
-ZINC_ETCD_PREFIX=<yout etcd perfix, default /zinc>
-ZINC_MAX_DOCUMENT_SIZE=1m # Bulk and multisearch limit on the maximum single document，default 1m 
-ZINC_CLUSTER_MANAGER_ADDR=127.0.0.1:4081 # manager address
-```
-
-### Cluster-manger Configurations
-
-```shell
-ZINC_CLUSTER_MANAGER_LOG_DIR=/opt/seasearch/data/log
-ZINC_CLUSTER_MANAGER_HOST=0.0.0.0
-ZINC_CLUSTER_MANAGER_PORT=4081
-ZINC_CLUSTER_MANAGER_ETCD_ENDPOINTS=<your etcd endpoints>
-ZINC_CLUSTER_MANAGER_ETCD_PREFIX=<yout etcd perfix, default /zinc>
-```
-
 ## Logs Configurations
 
 ```shell
diff --git a/manual/deploy/README.md b/manual/deploy/README.md
index d0005cc..9e4eaeb 100644
--- a/manual/deploy/README.md
+++ b/manual/deploy/README.md
@@ -1,7 +1,5 @@
 # Deploy
 
-Note: SeaSearch only supports deployment via docker now.
-
 ## Download the seasearch.yml
 
 ```bash
diff --git a/mkdocs.yml b/mkdocs.yml
index 74c3934..3c02939 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -45,6 +45,7 @@ markdown_extensions:
 
 # Page tree
 nav:
+  - Introduction: README.md
   - Deploy: deploy/README.md
   - Configuration: config/README.md
   - SeaSearch API: api/seasearch_api.md