diff --git a/hosts/skydick/datapool.nix b/hosts/skydick/datapool.nix
index 78646c7..d6e85ec 100644
--- a/hosts/skydick/datapool.nix
+++ b/hosts/skydick/datapool.nix
@@ -381,9 +381,16 @@
       /srv/media          10.0.0.0/16(rw,async,no_subtree_check,all_squash,anonuid=900,anongid=997)
       /srv/media/library  10.0.0.0/16(ro,sync,no_subtree_check,root_squash)
 
-      # Per-user — explicit exports; all_squash maps every client UID to the owner
-      /srv/users/ldx      10.0.0.0/16(rw,sync,no_subtree_check,all_squash,anonuid=1000,anongid=100)
-      /srv/users/ye-lw21  10.0.0.0/16(rw,sync,no_subtree_check,all_squash,anonuid=1002,anongid=100)
+      # Per-user — explicit exports; all_squash maps every client UID to the owner.
+      # crossmnt lets NFS clients traverse into the child datasets
+      # (.../files, .../bt-state, .../timemachine, .../vm) without
+      # separate export entries. Equivalent to setting `nohide` on each
+      # child. Without it, the children appear as empty mountpoints over
+      # NFSv3 (this bit us 2026-05-14: door-pek's baidunetdisk bind
+      # silently wrote to the parent dataset's placeholder instead of
+      # the SMB-exposed `files` child).
+      /srv/users/ldx      10.0.0.0/16(rw,sync,no_subtree_check,crossmnt,all_squash,anonuid=1000,anongid=100)
+      /srv/users/ye-lw21  10.0.0.0/16(rw,sync,no_subtree_check,crossmnt,all_squash,anonuid=1002,anongid=100)
 
       # System
       /srv/system/backup  10.0.0.0/16(rw,sync,no_subtree_check,no_root_squash)