只争朝夕 | zhǐ zhēng zhāo xī
Xi Jinping used this chengyu during his 2020 New Year’s Greeting.
Meaning
Seize the day; make the best use of one’s time
Original
“让我们只争朝夕，不负韶华，共同迎接2020年的到来。”
Source
https://news.sina.com.cn/2019-12-31/doc-iihnzhfz9529721.shtml