diff --git a/examples/hot-import-bot/README.md b/examples/hot-import-bot/README.md
index 9ad805fd5cf4453b2170971d174f9b02c19ff1dc..b7569f6c556fc26c6cfdb4dc243adb1c0fc869c5 100644
--- a/examples/hot-import-bot/README.md
+++ b/examples/hot-import-bot/README.md
@@ -1,6 +1,6 @@
 # HOT-IMPORT LISTENSER
 
-**PR from @xinbenlv**
+## PR From @xinbenlv
 
 Hot import Wechaty listenser functions after change the source code without restart the program
 
@@ -12,16 +12,20 @@ The hot-import is based on an npm package [hot-import](https://www.npmjs.com/pac
 Not to be confused by the directory `../hot-reload-bot` which is a hand written
 hot reload approach proposed by [Gcaufy](https://github.com/Gcaufy)
 
-
 ## Run
 
- ```shell
- docker run -t -i --rm --name wechaty --mount type=bind,source="$(pwd)",target=/bot zixia/wechaty index.js
- ```
+```shell
+$ docker run -t -i --rm --name wechaty --mount type=bind,source="$(pwd)",target=/bot zixia/wechaty index.js
+
+# Enable LOG
+$ docker run -t -i --rm --name wechaty -e WECHATY_LOG=verbose --mount type=bind,source="$(pwd)",target=/bot zixia/wechaty index.js
+```
 
 Or
 
 ```shell
-./run-hot-import-bot.sh
-```
+$ ./run-hot-import-bot.sh
 
+# Enable LOG
+$ WECHATY_LOG=verbose ./run-hot-import-bot.sh
+```
diff --git a/examples/hot-import-bot/listeners/on-scan.js b/examples/hot-import-bot/listeners/on-scan.js
index 49d5005f95cfbe1b7f4899988b82ab4eaf37c79c..daf1e1df8ef4f9fa51dac1c8134fb6293def1795 100644
--- a/examples/hot-import-bot/listeners/on-scan.js
+++ b/examples/hot-import-bot/listeners/on-scan.js
@@ -21,6 +21,6 @@ export default async function onScan (url, code) {
   console.log(code, url)
 
   if (code === 0) {
-    require('qrcode-terminal').generate(loginUrl)
+    require('qrcode-terminal').generate(loginUrl, {small: true})
   }
 }
diff --git a/examples/hot-import-bot/run-hot-import-bot.sh b/examples/hot-import-bot/run-hot-import-bot.sh
index 05612907f843a28b60bcc04e48c03a4fff2e0221..827e444efbc32da76acd58929a8b16f33828f863 100755
--- a/examples/hot-import-bot/run-hot-import-bot.sh
+++ b/examples/hot-import-bot/run-hot-import-bot.sh
@@ -1,4 +1,4 @@
 #!/usr/bin/env bash
 set -e
 
-docker run -t -i --rm --name wechaty --mount type=bind,source="$(pwd)",target=/bot zixia/wechaty index.js
+docker run -t -i --rm --name wechaty -e WECHATY_LOG="$WECHATY_LOG" --mount type=bind,source="$(pwd)",target=/bot zixia/wechaty index.js
diff --git a/examples/hot-reload-bot/index.js b/examples/hot-reload-bot/index.js
index af7ad5ffa33350c7cb45e340a5f49e47ff3645cf..bff4a971f501050ce5ada226e368cb68765eeb7b 100644
--- a/examples/hot-reload-bot/index.js
+++ b/examples/hot-reload-bot/index.js
@@ -113,7 +113,7 @@ console.log(`
 
 ATTENTION: This example is DEPRECATED.
 
-Please see https://github.com/Chatie/wechaty/tree/master/examples/hot-reload-bot instead.
+Please see https://github.com/Chatie/wechaty/tree/master/examples/hot-import-bot instead.
 
 `)