What plagued the Qing royal family?

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Ad Honorem
Dec 2015
4,679
Florania
I deliberately use the names of the emperors:
Most would note the decline of numbers and survival rate of the princes and princesses: Let's use the age 20 as adulthood if it NOT noted in the encyclopedia.
Nurhaci: 16 sons and 8 daughters; all of them at least survive adulthood.
Huang Taiji: 11 sons and 14 daughters; noticeable infant mortality here already.
Fulin: 8 sons and 6 daughters; only 3 sons and 1 daughter survived adulthood.
Xuanye: 35 sons and 20 daughters; only 24 sons and 8 daughters survived adulthood.
Yingzheng: 10 sons and 4 daughters; 3 sons and 1 daughter survived adulthood.
Hongli: 17 sons and 10 daughters; only 5 survived when their father passed away.
Yongyan: 5 sons and 9 daughters; 4 sons and 2 daughters survived adulthood.
Minning: 9 sons and 10 daughters; 7 sons and 5 daughters survived adulthood.
Yizhu: 2 sons and 1 daughter; only the daughter survived adulthood.
Zaixun: No issues
Zaitian: No issues
Puyi: No issues

Minning may have "higher" survival rate of children due to relatively modern time.
Why were survival rates much lower between Nurhaci and Huang Taiji?
What led to the tremendous losses of princes and princesses during the Qing Dynasty?
Some claim inbreeding; then, how much was it an issue?
Zaixun was a child; we can exclude that.
Zaitian and Puyi were known to be infertile, why?
 
Sep 2016
598
天下
One thing, do we know for sure that those 24 children are Nurhaci are all he sired? Or maybe only those that survived into the adulthood were recorded? For the standards of medicine in 17th century that's pretty exceptional for so many children of one pair to survive.
 

VHS

Ad Honorem
Dec 2015
4,679
Florania
One thing, do we know for sure that those 24 children are Nurhaci are all he sired? Or maybe only those that survived into the adulthood were recorded? For the standards of medicine in 17th century that's pretty exceptional for so many children of one pair to survive.
He might sired these children; they were of different mothers, though.
 
Oct 2018
137
China
Mercury poisoning,The Forbidden City has buried a lot of “mercury vapor killers”, which originated from the promotion and development of the gold-plated technology in the Ming and Qing Dynasties. One of the raw materials of the sheet metal process is mercury, which can make the metal on the building more vivid. This feature of sheet metal is very much in line with the splendid decoration features of the palace, so it was used most in the middle and late Qing Dynasty.To make matters worse, Beijing is located at the confluence of plains and mountains. Its own conditions are not conducive to the spread of the atmosphere (one of the causes of the serious haze in Beijing). In addition, the walls of the palace are usually high, and the volatilized mercury vapor is even more difficult. Spread out, can only flow between high walls. The emperor’s grandsons grew up in the deep palace. Over time, they absorbed too much of these mercury vapors. When they grew up, they lost their fertility without knowing it.