make event image smaller
diff --git a/en/images/event/20200128-apache-echarts-5.png b/en/images/event/20200128-apache-echarts-5.png
index 9c64472..8712840 100644
--- a/en/images/event/20200128-apache-echarts-5.png
+++ b/en/images/event/20200128-apache-echarts-5.png
Binary files differ
diff --git a/en/images/event/20200128-apache-echarts-5.webp b/en/images/event/20200128-apache-echarts-5.webp
index 5b9b0ef..0fc4aee 100644
--- a/en/images/event/20200128-apache-echarts-5.webp
+++ b/en/images/event/20200128-apache-echarts-5.webp
Binary files differ
diff --git a/zh/images/event/20200128-apache-echarts-5.png b/zh/images/event/20200128-apache-echarts-5.png
index 9c64472..8712840 100644
--- a/zh/images/event/20200128-apache-echarts-5.png
+++ b/zh/images/event/20200128-apache-echarts-5.png
Binary files differ
diff --git a/zh/images/event/20200128-apache-echarts-5.webp b/zh/images/event/20200128-apache-echarts-5.webp
index 5b9b0ef..0fc4aee 100644
--- a/zh/images/event/20200128-apache-echarts-5.webp
+++ b/zh/images/event/20200128-apache-echarts-5.webp
Binary files differ