diff --git a/.github/workflows/build_slim_packages.yaml b/.github/workflows/build_slim_packages.yaml
index 08ed8ed2d..163956790 100644
--- a/.github/workflows/build_slim_packages.yaml
+++ b/.github/workflows/build_slim_packages.yaml
@@ -82,7 +82,7 @@ jobs:
         name: "${{ matrix.profile[0] }}_schema_dump"
         path: |
           scripts/spellcheck
-          _build/docgen/${{ matrix.profile[0] }}/schema.json
+          _build/docgen/${{ matrix.profile[0] }}/schema-en.json
 
   windows:
     runs-on: windows-2019
@@ -218,4 +218,4 @@ jobs:
         path: /tmp/
     - name: Run spellcheck
       run: |
-        bash /tmp/scripts/spellcheck/spellcheck.sh /tmp/_build/docgen/${{ matrix.profile }}/schema.json
+        bash /tmp/scripts/spellcheck/spellcheck.sh /tmp/_build/docgen/${{ matrix.profile }}/schema-en.json
diff --git a/apps/emqx_conf/src/emqx_conf.erl b/apps/emqx_conf/src/emqx_conf.erl
index 3da9f0457..c64062861 100644
--- a/apps/emqx_conf/src/emqx_conf.erl
+++ b/apps/emqx_conf/src/emqx_conf.erl
@@ -146,17 +146,17 @@ dump_schema(Dir, SchemaModule, I18nFile) ->
         fun(Lang) ->
             gen_config_md(Dir, I18nFile, SchemaModule, Lang),
             gen_api_schema_json(Dir, I18nFile, Lang),
-            gen_example_conf(Dir, I18nFile, SchemaModule, Lang)
+            gen_example_conf(Dir, I18nFile, SchemaModule, Lang),
+            gen_schema_json(Dir, I18nFile, SchemaModule, Lang)
         end,
-        [en, zh]
-    ),
-    gen_schema_json(Dir, I18nFile, SchemaModule).
+        ["en", "zh"]
+    ).
 
 %% for scripts/spellcheck.
-gen_schema_json(Dir, I18nFile, SchemaModule) ->
-    SchemaJsonFile = filename:join([Dir, "schema.json"]),
+gen_schema_json(Dir, I18nFile, SchemaModule, Lang) ->
+    SchemaJsonFile = filename:join([Dir, "schema-" ++ Lang ++ ".json"]),
     io:format(user, "===< Generating: ~s~n", [SchemaJsonFile]),
-    Opts = #{desc_file => I18nFile, lang => "en"},
+    Opts = #{desc_file => I18nFile, lang => Lang},
     JsonMap = hocon_schema_json:gen(SchemaModule, Opts),
     IoData = jsx:encode(JsonMap, [space, {indent, 4}]),
     ok = file:write_file(SchemaJsonFile, IoData).
@@ -178,17 +178,15 @@ gen_api_schema_json_bridge(Dir, Lang) ->
     ok = do_gen_api_schema_json(File, emqx_bridge_api, SchemaInfo).
 
 schema_filename(Dir, Prefix, Lang) ->
-    Filename = Prefix ++ atom_to_list(Lang) ++ ".json",
+    Filename = Prefix ++ Lang ++ ".json",
     filename:join([Dir, Filename]).
 
-gen_config_md(Dir, I18nFile, SchemaModule, Lang0) ->
-    Lang = atom_to_list(Lang0),
+gen_config_md(Dir, I18nFile, SchemaModule, Lang) ->
     SchemaMdFile = filename:join([Dir, "config-" ++ Lang ++ ".md"]),
     io:format(user, "===< Generating: ~s~n", [SchemaMdFile]),
     ok = gen_doc(SchemaMdFile, SchemaModule, I18nFile, Lang).
 
-gen_example_conf(Dir, I18nFile, SchemaModule, Lang0) ->
-    Lang = atom_to_list(Lang0),
+gen_example_conf(Dir, I18nFile, SchemaModule, Lang) ->
     SchemaMdFile = filename:join([Dir, "emqx.conf." ++ Lang ++ ".example"]),
     io:format(user, "===< Generating: ~s~n", [SchemaMdFile]),
     ok = gen_example(SchemaMdFile, SchemaModule, I18nFile, Lang).
diff --git a/apps/emqx_dashboard/src/emqx_dashboard.erl b/apps/emqx_dashboard/src/emqx_dashboard.erl
index 2afc8b362..060045603 100644
--- a/apps/emqx_dashboard/src/emqx_dashboard.erl
+++ b/apps/emqx_dashboard/src/emqx_dashboard.erl
@@ -132,9 +132,11 @@ stop_listeners(Listeners) ->
 get_i18n() ->
     application:get_env(emqx_dashboard, i18n).
 
-init_i18n(File, Lang) ->
+init_i18n(File, Lang) when is_atom(Lang) ->
+    init_i18n(File, atom_to_list(Lang));
+init_i18n(File, Lang) when is_list(Lang) ->
     Cache = hocon_schema:new_desc_cache(File),
-    application:set_env(emqx_dashboard, i18n, #{lang => atom_to_binary(Lang), cache => Cache}).
+    application:set_env(emqx_dashboard, i18n, #{lang => Lang, cache => Cache}).
 
 clear_i18n() ->
     case application:get_env(emqx_dashboard, i18n) of