diff --git a/lib/tasks/asia_database_tasks.rake b/lib/tasks/asia_database_tasks.rake
index 938a7c1..5c492dc 100644
--- a/lib/tasks/asia_database_tasks.rake
+++ b/lib/tasks/asia_database_tasks.rake
@@ -160,30 +160,50 @@ module AsiaDatabasePlugin
 			puts "Exhibition(show) #{et.id} saved" if et.save
 		end
 	end
+	def self.hashify(data_list, grouping_keys)
+		data_list.each_with_object({}) do |data, result|
+		  	val = result
+		  	grouping_keys[0...-1].each_with_index do |key, i|
+		  		kk = data[key]
+		  		val[kk] ||= {}
+		  		val = val[kk]
+		 	end
+		 	kk = data[grouping_keys[-1]]
+		 	val[kk] ||= []
+		 	val[kk] << data
+		end
+	end
 end
 namespace :asia_database do
 	desc "Sync asia database"
 	task :sync,[:user_names, :only_sync_data] => [:environment] do |task,args|
+		I18n.locale = "zh_tw"
 		if args.user_names.present?
 			asia_teachers = AsiaTeacher.where(:email_id.in=>args.user_names).to_a
 		else
 			if args.only_sync_data.blank? || (args.only_sync_data != 'true' && args.only_sync_data != true)
-				asia_depart_teachers = JSON.parse(File.read(File.expand_path("../../../asia_depart_teachers.json", __FILE__)))
+				#{"ukey"=>"107100033", "ad"=>"slliu", "emp_nm"=>"劉淑玲",
+				#"emp_enm"=>"LIU,   SHU-LING", "emp_typeNm"=>"專任", "dept_id"=>"NS00",
+				#"dept_college"=>"護理學院", "dept_nm"=>"護理學系", "dept_Fullnm"=>"護理學院護理學系",
+				#"dept_Fullenm"=>"Department of Nursing"}
+				asia_depart_teachers = AsiaDatabasePlugin.hashify(get_all_teacher_data, ['emp_typeNm', 'dept_college', 'dept_nm'])['專任']
+				AsiaAcademy.where(:academy_name.nin => asia_depart_teachers.keys).delete_all
+				puts asia_depart_teachers.keys.inspect
+				email_ids = []
 				asia_depart_teachers.each do |academy_name, departs_info|
 					academy = AsiaAcademy.where("academy_name.zh_tw"=>academy_name).first
 					if academy.nil?
 						academy = AsiaAcademy.create({:academy_name_translations=>AsiaDatabasePlugin.localize_data(academy_name)})
 					end
-					departs_info.each do |depart_name, user_names|
+					puts departs_info.keys.inspect
+					departs_info.each do |depart_name, data_list|
 						depart = AsiaDepartment.where("department_name.zh_tw"=>depart_name, "asia_academy"=>academy).first
 						if depart.nil?
 							depart = AsiaDepartment.create({:department_name_translations=>AsiaDatabasePlugin.localize_data(depart_name), :asia_academy=>academy})
 						end
-						user_names.each do |email_id|
-							teacher_data = get_sync_data(email_id)
-							emp = teacher_data["emp"]
-							next if emp.blank?
-							emp = emp[0]
+						data_list.each do |teacher_data|
+							email_id = teacher_data['ad']
+							email_ids << email_id
 							asia_teacher = AsiaTeacher.where(:email_id=>email_id).first
 							if asia_teacher.nil?
 								asia_teacher = AsiaTeacher.new(:email_id=>email_id, :asia_academy=>academy, :asia_department=>depart)
@@ -191,12 +211,13 @@ namespace :asia_database do
 								asia_teacher.asia_academy = academy
 								asia_teacher.asia_department = depart
 							end
-							asia_teacher.ukey = emp["ukey"]
-							asia_teacher.teacher_translations = {"zh_tw"=>emp["emp_nm"], "en"=>emp["emp_enm"]}
+							asia_teacher.ukey = teacher_data["ukey"]
+							asia_teacher.teacher_translations = {"zh_tw"=>teacher_data["emp_nm"], "en"=>teacher_data["emp_enm"]}
 							asia_teacher.save
 						end
 					end
 				end
+				AsiaTeacher.where(:email_id.nin => email_ids).delete_all
 			end
 			asia_teachers = AsiaTeacher.all.to_a
 		end
@@ -242,4 +263,12 @@ namespace :asia_database do
 		res = net_http_get_response(uri + "?#{encrypt_base64}")
 		return JSON.parse(res.body,{object_class: AsiaDatabasePlugin::SafeHash})
 	end
+	def get_all_teacher_data
+		res = net_http_get_response(URI.parse("https://webap.asia.edu.tw/TchEportfolio/API/ResearchTID/Load"))
+		data = JSON.parse(res.body,{object_class: AsiaDatabasePlugin::SafeHash})
+		if data['emp']
+			return data['emp']
+		end
+		return []
+	end
 end
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