Meaning of guān jī:
guān jī
关机
Verb
to turn off (a machine or device); to finish shooting a film
Nǐ kěyǐ zài wǎnshàng shuìjiào zhīqián jìde guānjī.
你可以在晚上睡觉之前记得关机。
You can remember to turn off the machine before going to sleep at night.
Diànyǐng pāishè wánchéng hòu, dǎoyǎn shuō le yī shēng “guān jī”.
电影拍摄完成后,导演说了一声“关机”。
After the film finished shooting, the director said 'wrap'.