crows turning white and horses growing horn—sth impossible ? 太史公曰： “世言荊軻，其稱(chēng)太子丹之命，“天雨粟，馬生角”也，太過(guò)。(《史記·刺客列傳》) The Grand Historian comments:In the popular story about Jing Ke,the statements about grain falling from heaven and horses growing horns are simply wild talk.