守望相助

Explanation: Watch: the defensive lookout. To deal with the invading scourge of the enemy or accident, near the village guard each other, mutual aid. 　　Usage: Joint type; as predicate; with compliment 　　Source: Qin Meng Ke, "Mencius Tengwen Gong on": "Rural Field in the same well, and out of phase friends, mutual help and support in disease." Thesaurus:  solidarity concur