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  2. Traditional Chinese timekeeping - Wikipedia

    en.wikipedia.org/.../Traditional_Chinese_timekeeping

    The time between each gēng is 1⁄10 of a day, making a gēng 2.4 hours—or 2 hours 24 minutes—long. The 5 gēngs in the night are numbered from one to five: yì gēng (一 更) (alternately chū gēng (初更) for "initial watch"); èr gēng (二更); sān gēng (三更); sì gēng (四更); and wǔ gēng (五更). The 5 gēngs in daytime ...

  3. Chinese numerology - Wikipedia

    en.wikipedia.org/wiki/Chinese_numerology

    Chinese numerology. Some numbers are believed by some to be auspicious or lucky (吉利, pinyin: jílì; Cantonese Yale: gātleih) or inauspicious or unlucky (不吉, pinyin: bùjí; Cantonese Yale: bātgāt) based on the Chinese word that the number sounds similar to. The numbers 6 and 8 are widely considered to be lucky, while 4 is considered ...

  4. Chinese numerals - Wikipedia

    en.wikipedia.org/wiki/Chinese_numerals

    Chinese numerals are words and characters used to denote numbers in written Chinese. Today, speakers of Chinese languages use three written numeral systems: the system of Arabic numerals used worldwide, and two indigenous systems. The more familiar indigenous system is based on Chinese characters that correspond to numerals in the spoken ...

  5. Chinese calendar - Wikipedia

    en.wikipedia.org/wiki/Chinese_calendar

    An epoch is a particular point in time at which a calendar system may use as its initial time reference, allowing for the consecutive numbering of years from a chosen starting year, date, or time. In the Chinese calendar system, examples include the inauguration of Huangdi or the birth of Confucius.

  6. Incense clock - Wikipedia

    en.wikipedia.org/wiki/Incense_clock

    The incense clock (simplified Chinese: 香钟; traditional Chinese: 香鐘; pinyin: xiāngzhōng; Wade–Giles: hsiang-chung; lit. 'fragrance clock') is a timekeeping device that originated from China during the Song Dynasty (960–1279) and spread to neighboring East Asian countries such as Japan and Korea. The clocks' bodies are effectively ...

  7. Counting rods - Wikipedia

    en.wikipedia.org/wiki/Counting_rods

    Each time one shifts a number one position to the right, it is divided by 10. This applies to single-digit numbers or multiple-digit numbers. Song dynasty mathematician Jia Xian used hand-written Chinese decimal orders 步十百千萬 as rod numeral place value, as evident from a facsimile from a page of Yongle Encyclopedia. He arranged ...

  8. Decimal time - Wikipedia

    en.wikipedia.org/wiki/Decimal_time

    The time of day is sometimes represented as a decimal fraction of a day in science and computers. Standard 24-hour time is converted into a fractional day by dividing the number of hours elapsed since midnight by 24 to make a decimal fraction. Thus, midnight is 0.0 day, noon is 0.5 d, etc., which can be added to any type of date, including (all ...

  9. Four-corner method - Wikipedia

    en.wikipedia.org/wiki/Four-Corner_Method

    The four-corner method was invented in the 1920s by Wang Yunwu, the editor in chief at Commercial Press Ltd., China.Its original purpose was to aid telegraphers in looking up Chinese telegraph code numbers in use at that time from long lists of characters.