diff --git a/docs/en/10-cluster/03-high-availability.md b/docs/en/21-tdinternal/03-high-availability.md similarity index 100% rename from docs/en/10-cluster/03-high-availability.md rename to docs/en/21-tdinternal/03-high-availability.md diff --git a/docs/en/10-cluster/04-load-balance.md b/docs/en/21-tdinternal/04-load-balance.md similarity index 100% rename from docs/en/10-cluster/04-load-balance.md rename to docs/en/21-tdinternal/04-load-balance.md