1 files changed, 3 insertions, 6 deletions

diff --git a/README.md b/README.md
index b0c1859..d3055ec 100644
--- a/README.md
+++ b/README.md
@@ -2,18 +2,15 @@
 
 Emacs frontend for weather web service [wttr.in].
 
-wttrin.el provides the weather information from wttr.in based on your
-query condition.
-
 ## Usage
 
-Set variable `wttrin-query`:
+set a default cities list for completion:
 
 ```elisp
-(defvar wttrin-query "Taipei")
+(setq wttrin-default-city "Taipei")
 ```
 
-Run `M-x wttrin` to get the information:
+Then run `M-x wttrin` to get the information.
 
 ![screenshot]