榆塞 yúsài frontier stronghold Definitions Defs Origin Strokes Stroke Words Sentences Sents 榆塞 yúsài frontier stronghold (literary) a strategic border fort or frontier stronghold; also used specifically to refer to 山海关 shānhǎiguān Cross-References See 山海关 shānhǎiguān
榆塞 yúsài frontier stronghold (literary) a strategic border fort or frontier stronghold; also used specifically to refer to 山海关 shānhǎiguān Cross-References See 山海关 shānhǎiguān
