Meaning
To keep watch and defend one another (idiom from Mencius); to join forces to defend against external aggressors, offer mutual help and protection
Original
“国际社会必须树立人类命运共同体意识，守望相助，携手应对风险挑战，共建美好地球家园。”
Source:
《求是》杂志发表习近平总书记重要文章《团结合作是国际社会战胜疫情最有力武器》, April 15, 2020.