有备无患 (yǒu bèi wú huàn): Preparedness averts peril.; to be prepared, just in case

有yǒu备bèi无wú患huàn

Preparedness averts peril.; to be prepared, just in case

Prepared, you have nothing to fear. The Japanese 備えあれば憂いなし is the identical phrase.

The same saying in Japanese:

A Chinese idiom (成语)