use hd image
diff --git a/zh/images/event/20200128-apache-echarts-5.png b/zh/images/event/20200128-apache-echarts-5.png
index 8712840..9c64472 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 0fc4aee..f3ffd0e 100644
--- a/zh/images/event/20200128-apache-echarts-5.webp
+++ b/zh/images/event/20200128-apache-echarts-5.webp
Binary files differ