diff --git a/example/ex1.ug b/example/ex1.ug
index 139597f..e39a211 100644
--- a/example/ex1.ug
+++ b/example/ex1.ug
@@ -1,2 +1,11 @@
+貓咪的眼睛，
 
 
+狐狸的耳朵。
+
+我是
+
+貓，還沒有名字。@foo%我是註釋
+
+%
+{@foo|@bar|12\|}
\ No newline at end of file
diff --git a/src/classes.jl b/src/classes.jl
index 0d09350..f8c45ca 100644
--- a/src/classes.jl
+++ b/src/classes.jl
@@ -9,5 +9,5 @@ struct SPACE<:Node val end # space
 struct NL<:Node val end # newline
 struct PROG<:Node val end # all the program
 # pattern in regex form
-struct PTN_RGX<:Node val::Regex end
+#struct PTN_RGX<:Node val::Regex end
 end
\ No newline at end of file
diff --git a/src/parsing.jl b/src/parsing.jl
index 5f8c749..7b208fb 100644
--- a/src/parsing.jl
+++ b/src/parsing.jl
@@ -16,7 +16,7 @@ space = p"[ \t]" > Passes.Classes.SPACE
 id_name = p"[_a-zA-Z][_0-9a-zA-Z]*" > Passes.Classes.ID
 id = E"@" + id_name
 
-char = p"[^ \n\r\t\\]" |> Passes.Classes.CHAR #[1:2,:?]
+char = p"[^ \n\r\t\\]" > Passes.Classes.CHAR #[1:2,:?]
 
 # chars should be preceded by "\" are \, {, }, |, @, %
 esc_char = p"[\{\|\}\@\%]" > Passes.Classes.ESC_CHAR
@@ -67,9 +67,11 @@ end
 function match_unit(pair)
     pattern = pair[1]
     ast_item = pair[2]
-
-    if typeof(pattern) == Passes.Classes.PTN_RGX
-        is_matched = match(pattern.val, ast_item.val)
+    #println(pattern, "~~~", ast_item)
+    if typeof(pattern) != typeof(ast_item)
+        return false
+    elseif typeof(pattern.val) == Regex
+        is_matched = occursin(pattern.val, ast_item.val)
         return is_matched
     else
         return pattern.val == ast_item.val
@@ -86,9 +88,13 @@ function use_pass(ast_val, pass)
 
         if ast_pattern_matched(pass_pattern, ast_head)          
             ast_head = pass.func(ast_head)
-            remained = use_pass([ast_head[2:end];ast_val[pass_pattern_length+1:end]], pass)
+            raw_remained = [ast_head[2:end];ast_val[pass_pattern_length+1:end]]
+            remained = use_pass(raw_remained, pass)
             ast_val = [ast_head[1]; remained]
         else
+            raw_remained = ast_val[2:end]
+            remained = use_pass(raw_remained, pass)
+            ast_val = [ast_head[1]; remained]
             return ast_val
         end
     end
diff --git a/src/passes.jl b/src/passes.jl
index dfe254d..1d08561 100644
--- a/src/passes.jl
+++ b/src/passes.jl
@@ -17,13 +17,24 @@ end
 function two_nl_to_par_pass_func(two_nl)
     return [Classes.SEQ([Classes.ID("par")])]
 end
-two_nl_to_par_pattern = [Classes.NL([]), Classes.NL([])] #two continuous newline
 
+two_nl_to_par_pattern = [Classes.NL([]), Classes.NL([])] #two continuous newline
 
 two_nl_to_par_pass = Pass(two_nl_to_par_pattern,
     two_nl_to_par_pass_func)
-
-
 push!(processed_passes, two_nl_to_par_pass)
 
+# in 2 hanzi add glue.
+function insert_hglue_in_adjacent_chinese(two_nl)
+    _0pt = Classes.SEQ([Classes.ID("pt"); Classes.CHAR(["0"])])
+    inner = Classes.SEQ([Classes.ID("hglue"); _0pt])
+    return [two_nl[1]; inner; two_nl[2]]
+end
+adjacent_chinese_pattern = [Classes.CHAR(r"[\p{Han}，。！？：「」『』…]"),
+    Classes.CHAR(r"[\p{Han}，。！？：「」『』…]")]
+
+adjacent_glue_pass = Pass(adjacent_chinese_pattern,
+insert_hglue_in_adjacent_chinese)
+push!(processed_passes, adjacent_glue_pass)
+
 end
\ No newline at end of file
diff --git a/src/uahgi.jl b/src/uahgi.jl
index d988340..07a29b5 100644
--- a/src/uahgi.jl
+++ b/src/uahgi.jl
@@ -12,7 +12,7 @@ function parse_commandline()
     @add_arg_table! s begin
         "FILE"
             help = "the file path to be converted."
-            #required = true
+            required = true
     end
 
     return parse_args(s)
@@ -21,11 +21,13 @@ end
 
 function main()
     parsed_args = parse_commandline()
-    if parsed_args["FILE"] === nothing
-        file_path = "./example/ex1.ug" # for test
-    else
-        file_path = parsed_args["FILE"]
-    end
+    file_path = parsed_args["FILE"]
+    # for test
+    #if parsed_args["FILE"] === nothing
+    #    file_path = "./example/ex1.ug"
+    #else
+    #    file_path = parsed_args["FILE"]
+    #end
     file_content = open(f->read(f, String), file_path)
     Parsing.parse(file_content)
 end