闭关自守 bìguānzìshǒu closed-door policy Origin Definitions Defs Strokes Stroke Words Sentences Sents 闭关 閉關 bìguān to close the borders To close border passes or ports; to seal off a country from foreign trade or outside contact.自守 zìshǒu to behave oneself To keep to one's duties or nature; to behave one's self and maintain one's integrity.