diff --git a/base/web/serve.go b/base/web/serve.go
index eea1514f..986f6498 100644
--- a/base/web/serve.go
+++ b/base/web/serve.go
@@ -28,7 +28,7 @@ func _serve_start(m *ice.Message) {
 	kit.If(m.Option(aaa.USERNAME), func() { aaa.UserRoot(m, m.Option(aaa.USERNICK), m.Option(aaa.USERNAME)) })
 	kit.If(m.Option(tcp.PORT) == tcp.RANDOM, func() { m.Option(tcp.PORT, m.Cmdx(tcp.PORT, aaa.RIGHT)) })
 	kit.If(runtime.GOOS == cli.WINDOWS || m.Cmdx(cli.SYSTEM, "lsof", "-i", ":"+m.Option(tcp.PORT)) != "", func() {
-		m.Go(func() { m.Cmd(SPIDE, ice.OPS, _serve_address(m)+"/exit", ice.Maps{CLIENT_TIMEOUT: "30ms"}) }).Sleep30ms()
+		m.Go(func() { m.Cmd(SPIDE, ice.OPS, _serve_address(m)+"/exit", ice.Maps{CLIENT_TIMEOUT: "300ms"}) }).Sleep300ms()
 	})
 	cli.NodeInfo(m, kit.Select(ice.Info.Hostname, m.Option(tcp.NODENAME)), SERVER)
 	m.Start("", m.OptionSimple(tcp.HOST, tcp.PORT)...)
diff --git a/conf.go b/conf.go
index 4c559262..ca6ab0a1 100644
--- a/conf.go
+++ b/conf.go
@@ -117,6 +117,7 @@ const ( // DIR
 	SHARE_LOCAL     = "/share/local/"
 
 	ISH_PLUGED   = ".ish/pluged/"
+	USR_PACKAGE  = "usr/package.json"
 	USR_MODULES  = "usr/node_modules/"
 	USR_GEOAREA  = "usr/geoarea/"
 	USR_RELEASE  = "usr/release/"
diff --git a/core/chat/macos/applications.go b/core/chat/macos/applications.go
index f8b8cb4e..b4a7a328 100644
--- a/core/chat/macos/applications.go
+++ b/core/chat/macos/applications.go
@@ -20,7 +20,7 @@ func init() {
 	Index.MergeCommands(ice.Commands{
 		APPLICATIONS: {Actions: ice.MergeActions(ice.Actions{
 			ice.CTX_INIT: {Hand: func(m *ice.Message, arg ...string) {
-				FinderAppend(m, APPLICATIONS, m.PrefixKey())
+				FinderAppend(m, "", m.PrefixKey())
 				defer Notify(m, "Infomation.png", cli.RUNTIME, "系统启动成功", ctx.INDEX, cli.RUNTIME)
 				m.Travel(func(p *ice.Context, c *ice.Context, key string, cmd *ice.Command) {
 					kit.If(cmd.Icon, func() {
@@ -42,8 +42,13 @@ func init() {
 	})
 }
 func install(m *ice.Message, cmd, icon, index string, arg ...string) {
-	name := kit.TrimExt(path.Base(icon), nfs.PNG, nfs.JPG)
-	nfs.Exists(m, ice.USR_ICONS+icon, func(p string) { icon = p })
+	name := kit.TrimExt(path.Base(icon), nfs.PNG, nfs.JPG, nfs.JPEG)
+	if icon != "" {
+		nfs.Exists(m, ice.USR_ICONS+icon, func(p string) { icon = p })
+		if m.Warn(!strings.HasPrefix(icon, web.HTTP) && !nfs.Exists(m, icon)) {
+			return
+		}
+	}
 	m.Cmd(Prefix(cmd), mdb.CREATE, mdb.NAME, name, mdb.ICON, icon, ctx.INDEX, index, arg)
 }
 func AppInstall(m *ice.Message, icon, index string, arg ...string) {
diff --git a/core/chat/macos/finder.js b/core/chat/macos/finder.js
index 70fa1568..fd7c9542 100644
--- a/core/chat/macos/finder.js
+++ b/core/chat/macos/finder.js
@@ -3,6 +3,7 @@ Volcanos(chat.ONIMPORT, {
 		var item = can.onimport.item(can, value, function(event) { if (can.onmotion.cache(can, function() { return value.name }, can.ui.content)) { return }
 			can.runActionCommand(event, value.index, [], function(msg) {
 				switch (value.name) {
+					case ".":
 					case "applications": can.onimport.icons(can, msg, can.ui.content); break
 					default: can.onappend.table(can, msg, null, can.ui.content)
 				} can.onimport.layout(can)
diff --git a/core/code/vimer.go b/core/code/vimer.go
index a665fe93..8f7d5285 100644
--- a/core/code/vimer.go
+++ b/core/code/vimer.go
@@ -62,7 +62,14 @@ func init() {
 		ice.REQUIRE_USR: {Hand: func(m *ice.Message, arg ...string) { web.ShareLocalFile(m, ice.USR, path.Join(arg...)) }},
 		ice.REQUIRE_MODULES: {Hand: func(m *ice.Message, arg ...string) {
 			p := path.Join(ice.USR_MODULES, path.Join(arg...))
-			kit.If(!nfs.Exists(m, p), func() { m.Cmd(cli.SYSTEM, "npm", INSTALL, arg[0], kit.Dict(cli.CMD_DIR, ice.USR)) })
+			kit.If(!nfs.Exists(m, p), func() {
+				if kit.IsIn(m.Option(ice.MSG_USERROLE), aaa.TECH, aaa.ROOT) {
+					kit.If(!nfs.Exists(m, ice.USR_PACKAGE), func() {
+						m.Cmd(nfs.SAVE, ice.USR_PACKAGE, kit.Formats(kit.Dict(mdb.NAME, "usr", nfs.VERSION, "0.0.1")))
+					})
+					m.Cmd(cli.SYSTEM, "npm", INSTALL, arg[0], kit.Dict(cli.CMD_DIR, ice.USR))
+				}
+			})
 			m.RenderDownload(p)
 		}},
 	})
diff --git a/core/mall/loan.go b/core/mall/loan.go
new file mode 100644
index 00000000..41730bc8
--- /dev/null
+++ b/core/mall/loan.go
@@ -0,0 +1,86 @@
+package mall
+
+import (
+	"math"
+
+	ice "shylinux.com/x/icebergs"
+	"shylinux.com/x/icebergs/base/web/html"
+	kit "shylinux.com/x/toolkits"
+)
+
+const LOAN = "loan"
+
+func init() {
+	const (
+		YEAR      = "year"
+		RATE      = "rate"
+		MONTH     = "month"
+		PAYMENT   = "payment"
+		PRESENT   = "present"
+		INTEREST  = "interest"
+		INTERESTS = "interests"
+		PRESENTS  = "presents"
+	)
+	Index.MergeCommands(ice.Commands{
+		LOAN: {Name: "loan auto loan1 loan2", Help: "分期贷款", Meta: kit.Dict(
+			ice.CTX_TRANS, kit.Dict(html.INPUT, kit.Dict(
+				YEAR, "年数", RATE, "利率", MONTH, "期数", PAYMENT, "月供",
+				PRESENT, "本金", INTEREST, "利息", INTERESTS, "累积利息", PRESENTS, "还欠本金",
+				AMOUNT, "累积还款",
+			)),
+		), Actions: ice.MergeActions(ice.Actions{
+			"loan1": {Name: "load present=300 year=30 rate=4.2", Help: "等额本息", Hand: func(m *ice.Message, arg ...string) {
+				//〔贷款本金×月利率×(1＋月利率)^还款月数〕÷〔(1＋月利率)^还款月数 - 1〕
+				number, rate := kit.Float(m.Option(YEAR))*12, kit.Float(m.Option(RATE))/100/12
+				present := kit.Float(m.Option(PRESENT)) * 10000
+				pow := math.Pow((1 + rate), number)
+				p := present * rate * pow / (pow - 1)
+				var interests, presents float64
+				presents = present
+				for i := float64(0); i < number; i++ {
+					_p := presents * rate
+					interests += _p
+					presents -= (present / number)
+					m.Push(MONTH, kit.Int(i+1)).Push(PAYMENT, p)
+					m.Push(PRESENT, p-_p).Push(INTEREST, _p)
+					m.Push(INTERESTS, interests)
+					m.Push(PRESENTS, presents)
+					m.Push(AMOUNT, p*(i+1))
+				}
+				m.Status(kit.Dict(
+					PAYMENT, kit.Format("%0.2f 元", p),
+					PRESENT, kit.Format("%0.2f 万", present/10000),
+					INTEREST, kit.Format("%0.2f 万", p*number/10000-present/10000),
+					AMOUNT, kit.Format("%0.2f 万", p*number/10000),
+					MONTH, kit.Format("%v 期", number),
+				))
+			}},
+			"loan2": {Name: "load present=300 year=30 rate=4.2", Help: "等额本金", Hand: func(m *ice.Message, arg ...string) {
+				// 每月还款金额 =（贷款本金 ÷ 还款月数）+（本金 — 已归还本金累计额）×每月利率
+				present := kit.Float(m.Option(PRESENT)) * 10000
+				number, rate := kit.Float(m.Option(YEAR))*12, kit.Float(m.Option(RATE))/100/12
+				var interests, presents, amount, payment float64
+				presents = present
+				for i := float64(0); i < number; i++ {
+					p := present/number + (present-i*(present/number))*rate
+					interests += (present - i*(present/number)) * rate
+					presents -= present / number
+					amount += p
+					kit.If(i == 0, func() { payment = p })
+					m.Push(MONTH, kit.Int(i+1)).Push(PAYMENT, p)
+					m.Push(PRESENT, present/number).Push(INTEREST, (present-i*(present/number))*rate)
+					m.Push(INTERESTS, interests)
+					m.Push(PRESENTS, presents)
+					m.Push(AMOUNT, amount)
+				}
+				m.Status(kit.Dict(
+					PAYMENT, kit.Format("%0.2f 元", payment),
+					PRESENT, kit.Format("%0.2f 万", present/10000),
+					INTEREST, kit.Format("%0.2f 万", amount/10000-present/10000),
+					AMOUNT, kit.Format("%0.2f 万", amount/10000),
+					MONTH, kit.Format("%v 期", number),
+				))
+			}},
+		})},
+	})
+}
diff --git a/core/wiki/word.go b/core/wiki/word.go
index 008d6ff9..ed6642c5 100644
--- a/core/wiki/word.go
+++ b/core/wiki/word.go
@@ -24,7 +24,7 @@ const WORD = "word"
 
 func init() {
 	Index.MergeCommands(ice.Commands{
-		WORD: {Name: "word path=src/main.shy@key auto play", Icon: "Books.png", Help: "上下文", Actions: ice.MergeActions(ice.Actions{
+		WORD: {Name: "word path=src/main.shy@key auto play", Help: "上下文", Icon: "Books.png", Actions: ice.MergeActions(ice.Actions{
 			ice.CTX_INIT: {Hand: func(m *ice.Message, arg ...string) {
 				WordAlias(m, NAVMENU, TITLE, NAVMENU)
 				WordAlias(m, PREMENU, TITLE, PREMENU)