In the MDZS novel, MXTX specifies that the Lan strictly sleep from 9 PM to 5 AM. (And WWX strictly sleeps from 1 AM to 9 AM lol) Why this specific time? From the many times my grandma scolded me, this is bc of TCM beliefs. Venturing too far into the internet for this brings up a lot of woo of dubious historical accuracy, so I just called my grandma to ask, and I'm mostly recording this for future self reference.
(Flashback to ABC Chinese class in college when we'd take turns calling our parents for help.)
Anyway, my grandma says each of the 12 blocks of time (that Chinese timekeeping used to use) are associated with specific health implications. Therefore, you have to calm down and get ready for bed at around 9 PM and be asleep before 11 PM and wake up after 5 AM. The hours right before 5 AM are ~important to stay lying down~ so that your blood will circulate appropriately.
But then she went on to say that my grandpa (a professor) would always stay up late bc the late hours are the quietest and best for reading.
(Flashback to ABC Chinese class in college when we'd take turns calling our parents for help.)
Anyway, my grandma says each of the 12 blocks of time (that Chinese timekeeping used to use) are associated with specific health implications. Therefore, you have to calm down and get ready for bed at around 9 PM and be asleep before 11 PM and wake up after 5 AM. The hours right before 5 AM are ~important to stay lying down~ so that your blood will circulate appropriately.
But then she went on to say that my grandpa (a professor) would always stay up late bc the late hours are the quietest and best for reading.