diff --git a/.gitpod.yml b/.gitpod.yml
index 80515169..0a147cca 100644
--- a/.gitpod.yml
+++ b/.gitpod.yml
@@ -5,7 +5,3 @@ vscode:
   extensions:
     - dbaeumer.vscode-eslint@2.1.3:1NRvj3UKNTNwmYjptmUmIw==
     - vscode-icons-team.vscode-icons@10.2.0:DrQUJPtFm0woSFiyitha8Q==
-ports:
-  - port: 8888
-    onOpen: open-preview
-  - port: 27017
diff --git a/README.md b/README.md
index 0ea1c01c..e1ebdfcc 100644
--- a/README.md
+++ b/README.md
@@ -2,9 +2,7 @@
 
 Hydro是一个高效的信息学在线测评系统。特点：易于部署，轻量，功能强大且易于扩展。  
 
-[部署说明](docs/deploy.md)  
-[附加组件开发说明](docs/addon.md)  
-[Hydro开发说明](docs/development.md)  
+[中文文档](https://hydro-dev.github.io)  
 [Hydro UI 传送门](https://github.com/hydro-dev/ui-default)  
 
 如果您认为本项目有价值，欢迎 star 。  
diff --git a/hydro/entry/master.ts b/hydro/entry/master.ts
index 1f12dfe0..9588005d 100644
--- a/hydro/entry/master.ts
+++ b/hydro/entry/master.ts
@@ -26,16 +26,9 @@ export async function load(call, args) {
         bus.subscribe(['system_database_connected'], h);
         require('../service/db');
     });
-    for (const i of builtinLib) require(`../lib/${i}`);
-    await lib(pending, fail);
-    require('../service/gridfs');
     require('../service/monitor');
-    const server = require('../service/server');
-    await server.prepare();
-    await service(pending, fail);
     for (const i of builtinModel) require(`../model/${i}`);
     for (const i of builtinHandler) require(`../handler/${i}`);
-    await model(pending, fail);
     for (const m in global.Hydro.model) {
         if (global.Hydro.model[m].ensureIndexes) {
             await global.Hydro.model[m].ensureIndexes();
diff --git a/hydro/handler/problem.ts b/hydro/handler/problem.ts
index b1a3791f..e3ce3d79 100644
--- a/hydro/handler/problem.ts
+++ b/hydro/handler/problem.ts
@@ -172,7 +172,8 @@ class ProblemDetailHandler extends ProblemHandler {
     @param('pid', Types.String, null, parsePid)
     async _prepare(domainId: string, pid: number | string) {
         this.response.template = 'problem_detail.html';
-        this.pdoc = await problem.get(domainId, pid, this.user._id, true);
+        this.pdoc = await problem.get(domainId, pid, this.user._id);
+        if (!this.pdoc) throw new ProblemNotFoundError(domainId, pid);
         if (this.pdoc.hidden && this.pdoc.owner !== this.user._id) {
             this.checkPerm(PERM.PERM_VIEW_PROBLEM_HIDDEN);
         }
diff --git a/hydro/handler/record.ts b/hydro/handler/record.ts
index 19cc5fe4..f7b8e32e 100644
--- a/hydro/handler/record.ts
+++ b/hydro/handler/record.ts
@@ -72,7 +72,7 @@ class RecordDetailHandler extends RecordHandler {
         }
         if (rdoc.type !== 'run') rdoc.stdout = rdoc.stderr = '';
         const [pdoc, udoc] = await Promise.all([
-            problem.get(domainId, rdoc.pid, null, false),
+            problem.get(domainId, rdoc.pid, null),
             user.getById(domainId, rdoc.uid),
         ]);
         this.response.body = {
@@ -138,7 +138,7 @@ class RecordMainConnectionHandler extends RecordConnectionHandler {
         // eslint-disable-next-line prefer-const
         let [udoc, pdoc] = await Promise.all([
             user.getById(this.domainId, rdoc.uid),
-            problem.get(this.domainId, rdoc.pid, null, false),
+            problem.get(this.domainId, rdoc.pid, null),
         ]);
         if (pdoc && pdoc.hidden && !this.user.hasPerm(PERM.PERM_VIEW_PROBLEM_HIDDEN)) pdoc = null;
         else this.send({ html: await this.renderHTML('record_main_tr.html', { rdoc, udoc, pdoc }) });
diff --git a/hydro/handler/user.ts b/hydro/handler/user.ts
index 5f792fc5..ba6523c7 100644
--- a/hydro/handler/user.ts
+++ b/hydro/handler/user.ts
@@ -102,9 +102,7 @@ class UserRegisterWithCodeHandler extends Handler {
         if (!mail) throw new InvalidTokenError(token.TYPE_REGISTRATION, code);
         if (password !== verifyPassword) throw new VerifyPasswordError();
         const uid = await system.inc('user');
-        await user.create({
-            uid, uname, password, mail, regip: this.request.ip,
-        });
+        await user.create(mail, uname, password, uid, this.request.ip);
         await token.del(code, token.TYPE_REGISTRATION);
         this.session.uid = uid;
         this.response.redirect = this.url('homepage');
@@ -331,9 +329,10 @@ class OauthCallbackHandler extends Handler {
                     break;
                 }
             }
-            const uid = await user.create({
-                mail: r.email, uname: username, password: String.random(32), regip: this.request.ip,
-            });
+            const uid = await user.create(
+                r.email, username, String.random(32),
+                undefined, this.request.ip,
+            );
             const $set: any = {
                 oauth: args.type,
             };
diff --git a/hydro/lib/template.ts b/hydro/lib/template.ts
index aff95751..97811fd2 100644
--- a/hydro/lib/template.ts
+++ b/hydro/lib/template.ts
@@ -2,13 +2,14 @@ import fs from 'fs';
 import path from 'path';
 import serialize from 'serialize-javascript';
 import nunjucks from 'nunjucks';
+import { argv } from 'yargs';
 import * as markdown from './markdown';
 import * as misc from './misc';
 
 class Loader extends nunjucks.Loader {
     // eslint-disable-next-line class-methods-use-this
     getSource(name: string) {
-        if (!process.env.debug) {
+        if (!argv.template) {
             if (!global.Hydro.ui.template[name]) throw new Error(`Cannot get template ${name}`);
             return {
                 src: global.Hydro.ui.template[name],
@@ -17,12 +18,11 @@ class Loader extends nunjucks.Loader {
             };
         }
         let fullpath = null;
-        const base = path.join(process.cwd(), 'templates');
-        const p = path.resolve(base, name);
+        const p = path.resolve(argv.template as string, name);
         if (fs.existsSync(p)) fullpath = p;
         if (!fullpath) throw new Error(`Cannot get template ${name}`);
         return {
-            src: fs.readFileSync(fullpath, 'utf-8'),
+            src: fs.readFileSync(fullpath, 'utf-8').toString(),
             path: fullpath,
             noCache: true,
         };
diff --git a/hydro/model/problem.ts b/hydro/model/problem.ts
index 2569e382..1c787045 100644
--- a/hydro/model/problem.ts
+++ b/hydro/model/problem.ts
@@ -42,7 +42,7 @@ export async function add(
 
 export async function get(
     domainId: string, pid: string | number,
-    uid: number = null, doThrow = true,
+    uid: number = null,
 ): Promise<Pdoc> {
     if (typeof pid !== 'number') {
         if (!Number.isNaN(parseInt(pid, 10))) pid = parseInt(pid, 10);
@@ -50,10 +50,7 @@ export async function get(
     const pdoc = Number.isInteger(pid)
         ? await document.get(domainId, document.TYPE_PROBLEM, pid)
         : (await document.getMulti(domainId, document.TYPE_PROBLEM, { pid }).toArray())[0];
-    if (!pdoc) {
-        if (doThrow) throw new ProblemNotFoundError(domainId, pid);
-        return null;
-    }
+    if (!pdoc) return null;
     if (uid) {
         pdoc.psdoc = await document.getStatus(domainId, document.TYPE_PROBLEM, pdoc.docId, uid);
     }
diff --git a/hydro/model/record.ts b/hydro/model/record.ts
index 9d2e4978..1c4b5fce 100644
--- a/hydro/model/record.ts
+++ b/hydro/model/record.ts
@@ -62,7 +62,7 @@ export async function add(domainId: string, data: RdocBase, addTask: boolean): P
         judgeAt: null,
     });
     const [pdoc, res] = await Promise.all([
-        problem.get(domainId, data.pid, null, false),
+        problem.get(domainId, data.pid, null),
         coll.insertOne(data),
     ]);
     if (addTask) {
diff --git a/hydro/model/user.ts b/hydro/model/user.ts
index da1df668..bd3c9355 100644
--- a/hydro/model/user.ts
+++ b/hydro/model/user.ts
@@ -164,9 +164,10 @@ export async function inc(_id: number, field: string, n = 1) {
     return udoc;
 }
 
-export async function create({
-    uid = null, mail, uname, password, regip = '127.0.0.1', priv = PRIV.PRIV_DEFAULT,
-}) {
+export async function create(
+    mail: string, uname: string, password: string,
+    uid: number, regip = '127.0.0.1', priv = PRIV.PRIV_DEFAULT,
+) {
     const salt = String.random();
     if (!uid) uid = await system.inc('user');
     try {
diff --git a/hydro/script/install.ts b/hydro/script/install.ts
index c4c3b43a..7ee98069 100644
--- a/hydro/script/install.ts
+++ b/hydro/script/install.ts
@@ -11,14 +11,7 @@ export async function run({ username = '', password = '' } = {}) {
     if (username && password) {
         const udoc = await user.getById('system', -1);
         if (!udoc) {
-            await user.create({
-                uid: -1,
-                mail: 'root@hydro.local',
-                uname: username,
-                password,
-                regip: '127.0.0.1',
-                priv: PRIV.PRIV_ALL,
-            });
+            await user.create('root@hydro.local', username, password, -1, '127.0.0.1', PRIV.PRIV_ALL);
         } else {
             const salt = String.random();
             await user.setById(-1, {
diff --git a/hydro/script/register.ts b/hydro/script/register.ts
index 52e0b402..c9ff877e 100644
--- a/hydro/script/register.ts
+++ b/hydro/script/register.ts
@@ -1,17 +1,13 @@
 import * as user from '../model/user';
-import * as system from '../model/system';
 
 export const description = 'Create a new user';
 
 export async function run({
     uname, password, mail, uid,
 }) {
-    if (!uid) uid = await system.inc('user');
-    else uid = parseInt(uid, 10);
-    if (Number.isNaN(uid)) throw new Error('uid');
-    await user.create({
-        uid, uname, password, mail, regip: '127.0.0.1',
-    });
+    if (uid) uid = parseInt(uid, 10);
+    if (uid && Number.isNaN(uid)) throw new Error('uid');
+    uid = await user.create(mail, uname, password, uid);
     return uid;
 }
 
diff --git a/package.json b/package.json
index e61d4874..63f5ee4b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hydrooj",
-  "version": "2.9.8",
+  "version": "2.9.9",
   "main": "dist/loader.js",
   "bin": "bin/hydrooj.js",
   "repository": "https://github.com/hydro-dev/Hydro.git",
@@ -49,7 +49,7 @@
     "@types/koa-morgan": "^1.0.4",
     "@types/koa-router": "^7.4.1",
     "@types/koa-static-cache": "^5.1.0",
-    "@types/lodash": "^4.14.157",
+    "@types/lodash": "^4.14.158",
     "@types/lru-cache": "^5.1.0",
     "@types/markdown-it": "^10.0.1",
     "@types/mongodb": "^3.5.25",
diff --git a/yarn.lock b/yarn.lock
index 6e94ddbf..b3769275 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -205,10 +205,10 @@
   resolved "https://registry.yarnpkg.com/@types/linkify-it/-/linkify-it-2.1.0.tgz#ea3dd64c4805597311790b61e872cbd1ed2cd806"
   integrity sha512-Q7DYAOi9O/+cLLhdaSvKdaumWyHbm7HAk/bFwwyTuU0arR5yyCeW5GOoqt4tJTpDRxhpx9Q8kQL6vMpuw9hDSw==
 
-"@types/lodash@^4.14.157":
-  version "4.14.157"
-  resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.157.tgz#fdac1c52448861dfde1a2e1515dbc46e54926dc8"
-  integrity sha512-Ft5BNFmv2pHDgxV5JDsndOWTRJ+56zte0ZpYLowp03tW+K+t8u8YMOzAnpuqPgzX6WO1XpDIUm7u04M8vdDiVQ==
+"@types/lodash@^4.14.158":
+  version "4.14.158"
+  resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.158.tgz#b38ea8b6fe799acd076d7a8d7ab71c26ef77f785"
+  integrity sha512-InCEXJNTv/59yO4VSfuvNrZHt7eeNtWQEgnieIA+mIC+MOWM9arOWG2eQ8Vhk6NbOre6/BidiXhkZYeDY9U35w==
 
 "@types/lru-cache@^5.1.0":
   version "5.1.0"