diff --git a/README.md b/README.md
index 77228bf..9ca5728 100644
--- a/README.md
+++ b/README.md
@@ -78,7 +78,7 @@ dependencies {
 * Strong Extensibility.
 * Live update support for displaying (see [echarts4j-chart-server](./echarts4j-chart-server/README.md)).
 * Snapshot for image render (see [echarts4j-snapshot-playwright](./echarts4j-snapshot-playwright/README.md)).
-* And more
+* And more.
 
 ### 🎨 Showcase
 
@@ -228,11 +228,11 @@ the [JavaDoc](https://javadoc.jitpack.io/com/github/koooooo-7/echarts4j/echarts4
                                 .build())
                         .yAxis(YAxis.builder().build())
                         .build()
-                        .addSeries(ListChartSeriesOption.builder()
+                        .addSeries(ListChartSeries.builder()
                                 .name(seriesName)
                                 .data(data1)
                                 .build())
-                        .addSeries(BarChartSeriesOption.builder()
+                        .addSeries(BarChartSeries.builder()
                                 .name(seriesName2)
                                 .data(data2)
                                 .build())
@@ -294,7 +294,7 @@ the [JavaDoc](https://javadoc.jitpack.io/com/github/koooooo-7/echarts4j/echarts4
                             .data(legendData)
                             .build())
                     .build()
-                    .addSeries(PieChartSeriesOption.builder()
+                    .addSeries(PieChartSeries.builder()
                             .name(seriesName)
                             .radius("55%")
                             .center(center)
diff --git a/README_ZH.md b/README_ZH.md
index 15025ea..d6e5183 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -210,11 +210,11 @@ dependencies {
                                 .build())
                         .yAxis(YAxis.builder().build())
                         .build()
-                        .addSeries(ListChartSeriesOption.builder()
+                        .addSeries(ListChartSeries.builder()
                                 .name(seriesName)
                                 .data(data1)
                                 .build())
-                        .addSeries(BarChartSeriesOption.builder()
+                        .addSeries(BarChartSeries.builder()
                                 .name(seriesName2)
                                 .data(data2)
                                 .build())
@@ -276,7 +276,7 @@ dependencies {
                             .data(legendData)
                             .build())
                     .build()
-                    .addSeries(PieChartSeriesOption.builder()
+                    .addSeries(PieChartSeries.builder()
                             .name(seriesName)
                             .radius("55%")
                             .center(center)
diff --git a/build.gradle b/build.gradle
index 5052945..7571c89 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,6 +5,7 @@ plugins {
 }
 
 version project.echarts4jVersion
+description ':doughnut: An inevitable charts library for Java.'
 
 allprojects {
     group 'com.github.koooooo7.echarts4j'