diff --git a/yimian/.ssh/known_hosts b/yimian/.ssh/known_hosts
new file mode 100644
index 00000000..58ca65c0
--- /dev/null
+++ b/yimian/.ssh/known_hosts
@@ -0,0 +1 @@
+51.75.170.87 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBIgG+Nx15pMaFHe4zY1xDTROXLhhKYkzz0EpAqKgXJvsGljQavOFPABVM5gXT+zpTS1pOnijtz1zf/e7m1k1UOY=