The "Five Watches" (五更, wǔ gēng) system in ancient China represented a method of dividing the night into five equal periods, primarily utilized for timekeeping and organizational purposes, especially in contexts of security and governance. Each "watch" (更, gēng) corresponded to a two-hour segment of the night, calculated from the time of sunset to sunrise. This system served as a fundamental framework for scheduling activities, coordinating military movements, and regulating civilian life after dark.
Historically, the Five Watches was deeply embedded in the administrative structure of various dynasties. The imperial court, for example, relied heavily on this system. Designated officials and guards were assigned to different watches, responsible for specific duties throughout the night. These duties included maintaining order within the palace, monitoring city gates, and providing alerts for any unusual activities. The watches were signaled through various means, most commonly by the beating of drums, the sounding of gongs, or the ringing of bells. These auditory signals, amplified by designated watchtowers, ensured that the citizenry and relevant authorities were informed of the progression of time. The timing of these signals was meticulously planned to coincide with the end of each watch, creating a synchronized system of timekeeping across a city or region. The signals not only indicated the time but also served to emphasize the importance of order and discipline enforced by the authorities.
The implementation of the Five Watches system held significant social implications. The nightly curfew, dictated by the end of the first watch (初更, chū gēng), regulated the movement of people and commerce within walled cities. During the night, most commercial activities ceased, and the gates of the city were closed. This provided a framework of security and control. Special permits or exemptions might have been granted for certain individuals, such as medical professionals or officials on duty, allowing them to traverse the city outside of normal curfew hours. Furthermore, the Five Watches influenced the rhythms of daily life. Farmers, merchants, and artisans adjusted their routines around the rise and fall of the watches. Festivals, ceremonies, and other large gatherings were often timed in accordance with the Five Watches, adding an element of ritual and formality. The system's presence instilled a shared sense of discipline and interconnectedness across the entire populace, regardless of their position in society. The sound of the gongs or drums marking the watch changes served as a constant reminder of the state’s control and the importance of adhering to societal norms.
Compared to modern time concepts, the Five Watches presents some distinct contrasts. Today's societies employ the 24-hour clock, dividing the day and night into precise units of hours, minutes, and seconds. Modern timekeeping relies on precise mechanical, digital, or atomic clocks, providing a level of accuracy unheard of in ancient China. Furthermore, the modern world enjoys a greater degree of flexibility in scheduling activities, 24/7 access to services, and the ability to measure and track time in ways that simply were not possible in imperial China. However, the underlying purpose of both systems—to structure human activities and maintain social order—remains consistent. While the Five Watches system provided a general framework for nocturnal activities, modern systems offer far more granular control, facilitating global communication, international travel, and complex industrial processes. Modern society’s concept of time is also less directly tied to the natural world. While the Five Watches' durations varied slightly with seasonal changes in daylight hours, the modern 24-hour clock provides an unchanging standard. Modern technologies, such as smartphones, ensure that time is continuously visible to individuals at any given moment, and the reliance on watches to denote the hour has greatly diminished. In essence, the Five Watches was a practical system designed to meet the constraints of its time, while the modern system reflects the advancements in technology and a societal embrace of precision and flexibility.
--- This article is based on traditional Chinese calendrical systems and historical texts, provided for cultural learning and reference purposes only.