Chang He (586 – 16 June 653), Courtesy name Dalai, formally the Count of Wushui (武水伯), was a Tang dynasty general and official.
He followed Crown Prince Li Jiancheng in suppressing Liu Heita's rebellion and was also involved in defeating Xu Yuanlang.
Ma Zhou wrote an essay of some 20 suggestions, which greatly impressed Emperor Taizong.
When Emperor Taizong questioned Chang He about this essay, he said: "This is not what I can think of, but suggested by Ma Zhou, my guest.
Emperor Taizong summoned Ma Zhou and, after a smooth conversation, had him serve at the Menxia Sheng (門下省, Imperial Chancellary).
Emperor Taizong awarded Chang He three hundred rolls of silk for discovering Ma Zhou.