起飞 (pinyin: qǐ fēi, written "qi fei" or "qifei") means (of an aircraft or rocket) to take off; to lift off. Below: its meaning, pronunciation, stroke order, and example sentences, so you can learn how to read, say, and write 起飞.
Meaning
(of an aircraft or rocket) to take off; to lift off
(fig.) (of an enterprise etc) to start to develop rapidly