diff --git a/main.go b/main.go
index 7601dc9..9ea00e7 100644
--- a/main.go
+++ b/main.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	str "github.com/fthvgb1/wp-go/helper/strings"
 	"io"
 	"log"
 	"net/http"
@@ -62,39 +63,45 @@ func penti(w http.ResponseWriter, req *http.Request) {
 
 func zhihuDaily(w http.ResponseWriter, req *http.Request) {
 	io.WriteString(w, fetch("https://feedx.best/rss/zhihudaily.xml", func(s string) string {
-		return filterItem(s, time.Now(), 1)
+		return filterItem(s, time.Now(), recentDay)
 	}))
 }
 
 func tjxz(w http.ResponseWriter, r *http.Request) {
 
 	io.WriteString(w, fetch("https://feedx.best/rss/tjxz.xml", func(s string) string {
-		return filterItem(s, time.Now(), 1)
+		return filterItem(s, time.Now(), recentDay)
 	}))
 }
 func bbcLearn(w http.ResponseWriter, _ *http.Request) {
 	io.WriteString(w, fetch("https://www.bbc.co.uk/learningenglish/chinese", func(s string) string {
-		return bbclearn.LearnParse(s, 1)
+		return bbclearn.LearnParse(s, recentDay)
 	}))
 }
 
 func theNewYorker(w http.ResponseWriter, r *http.Request) {
 	io.WriteString(w, fetch("https://feedx.best/rss/newyorker.xml", func(s string) string {
-		return filterItem(s, time.Now(), 1)
+		return filterItem(s, time.Now(), recentDay)
 	}))
 }
 
 func voaLearnEnglish(w http.ResponseWriter, r *http.Request) {
 	io.WriteString(w, fetch("https://feedx.best/rss/voalearningenglish.xml", func(s string) string {
-		return filterItem(s, time.Now(), 1)
+		return filterItem(s, time.Now(), recentDay)
 	}))
 }
 
+var recentDay = 1
+
 func main() {
 	port := os.Getenv("port")
 	if port == "" {
 		port = ":80"
 	}
+	day := os.Getenv("rss_recent_day")
+	if day != "" {
+		recentDay = str.ToInt[int](day)
+	}
 	time.Local = time.FixedZone("CST", 3600*8)
 	http.HandleFunc("/pentitugua", penti)                //喷嚏图挂
 	http.HandleFunc("/zhihuDaily", zhihuDaily)           //知乎日报