墻 qiáng HSK2 wall Origin Definitions Defs Strokes Stroke Words Sentences Sents 兄弟阋于墙，外御其侮 xiōngdìxìyúqiáng, wàiyùqíwǔ unite against aggression internal disunity dissolves at the threat of an invasion from outside Sources Frequency data MTSU Chinese text computingSUBTLEX-CH