diff --git a/apps/emqx/i18n/emqx_schema_i18n.conf b/apps/emqx/i18n/emqx_schema_i18n.conf
index 0ab781280..67a6bf4c7 100644
--- a/apps/emqx/i18n/emqx_schema_i18n.conf
+++ b/apps/emqx/i18n/emqx_schema_i18n.conf
@@ -188,8 +188,12 @@ emqx_schema {
 
   sysmon_vm_long_gc {
     desc {
-        en: "Enable Long GC monitoring."
-        zh: "启用长垃圾回收监控。"
+        en: """When an Erlang process spends long time to perform garbage collection, a warning level <code>long_gc</code> log is emitted,
+and an MQTT message is published to the system topic <code>$SYS/sysmon/long_gc</code>.
+"""
+        zh: """当系统检测到某个 Erlang 进程垃圾回收占用过长时间，会触发一条带有 <code>long_gc</code> 关键字的日志。
+同时还会发布一条主题为 <code>$SYS/sysmon/long_gc</code> 的 MQTT 系统消息。
+"""
     }
     label {
         en: "Enable Long GC monitoring."
@@ -199,8 +203,12 @@ emqx_schema {
 
   sysmon_vm_long_schedule {
     desc {
-        en: "Enable Long Schedule monitoring."
-        zh: "启用长调度监控。"
+        en: """When the Erlang VM detect a task scheduled for too long, a warning level 'long_schedule' log is emitted,
+and an MQTT message is published to the system topic <code>$SYS/sysmon/long_schedule</code>.
+"""
+        zh: """启用后，如果 Erlang VM 调度器出现某个任务占用时间过长时，会触发一条带有 'long_schedule' 关键字的日志。
+同时还会发布一条主题为 <code>$SYS/sysmon/long_schedule</code> 的 MQTT 系统消息。
+"""
     }
     label {
         en: "Enable Long Schedule monitoring."
@@ -210,8 +218,13 @@ emqx_schema {
 
   sysmon_vm_large_heap {
     desc {
-        en: "Enable Large Heap monitoring."
-        zh: "启用大 heap 监控。"
+        en: """When an Erlang process consumed a large amount of memory for its heap space,
+the system will write a warning level <code>large_heap</code> log, and an MQTT message is published to
+the system topic <code>$SYS/sysmon/large_heap</code>.
+"""
+        zh: """启用后，当一个 Erlang 进程申请了大量内存，系统会触发一条带有 <code>large_heap</code> 关键字的
+warning 级别日志。同时还会发布一条主题为 <code>$SYS/sysmon/busy_dist_port</code> 的 MQTT 系统消息。
+"""
     }
     label {
         en: "Enable Large Heap monitoring."
@@ -221,8 +234,13 @@ emqx_schema {
 
   sysmon_vm_busy_dist_port {
     desc {
-        en: "Enable Busy Distribution Port monitoring."
-        zh: "启用分布式端口过忙监控。"
+        en: """When the RPC connection used to communicate with other nodes in the cluster is overloaded,
+there will be a <code>busy_dist_port</code> warning log,
+and an MQTT message is published to system topic <code>$SYS/sysmon/busy_dist_port</code>.
+"""
+        zh: """启用后，当用于集群接点之间 RPC 的连接过忙时，会触发一条带有 <code>busy_dist_port</code> 关键字的 warning 级别日志。
+同时还会发布一条主题为 <code>$SYS/sysmon/busy_dist_port</code> 的 MQTT 系统消息。
+"""
     }
     label {
         en: "Enable Busy Distribution Port monitoring."
@@ -232,8 +250,12 @@ emqx_schema {
 
   sysmon_vm_busy_port {
     desc {
-        en: "Enable Busy Port monitoring."
-        zh: "启用端口过忙监控。"
+        en: """When a port (e.g. TCP socket) is overloaded, there will be a <code>busy_port</code> warning log,
+and an MQTT message is published to the system topic <code>$SYS/sysmon/busy_port</code>.
+"""
+        zh: """当一个系统接口（例如 TCP socket）过忙，会触发一条带有 <code>busy_port</code> 关键字的 warning 级别的日志。
+同时还会发布一条主题为 <code>$SYS/sysmon/busy_port</code> 的 MQTT 系统消息。
+"""
     }
     label {
         en: "Enable Busy Port monitoring."