Before the invention of clocks, how did people around the world time?

Before the invention of clocks and watches, people all over the world used many methods to record time.

Among them, what impressed me the most was the ancient sunset in China. This way of timing is very powerful, judging time according to the sun's irradiation and the shadow of the object. However, many countries judge time according to the position of the sun. Or use an hourglass to time.

There were many ways to measure time in ancient times, and the ancients were particularly clever.