It hit the Mongols the hardest because they DID have a centralized government, which was nearly wiped out.
Yeah, it's called a book. I believe it's called "How the Mongols Saved Civilization"
Been a while since I read it so the title may be off a little.
The Mongol "unified" Empire was established by Genghis Kahn from 1206 onward and ended in 1248 with the death of his grandson. Thus resulting into 4 Kahnats - and immediate infighting within and amongst the Kahnats.
The Mongol Dynasty in China - aka the
Yuan Dynasty was
established by the Mongols and ruled China
from 1271 to 1368 CE
The remaining Mongol ruled territories even refused to acknowledge Kublai Kahn as their overlord
The
"black death" only started to show up from 1350 onward - by then the Mongols were no more unified and their control was already lost - furthermore they never possessed the manpower to effectively control those conquered regions - but were already driven out or assimilated by the local population.
e.g.:
After the devastating Mongol invasion of 1260, much of Syria again became directly dependent on the new rulers in Egypt, the Mameluke Damascus was the seat of the sultan’s deputy in Syria, with a miniature court fashioned after that of Cairo. The economy recovered quickly after the Mongol withdrawal in 1260, and it was booming by the beginning of the 14th century.
Also the Mongols never conducted "global business" - or any significant business. They did however control most of the Silk Road - used in vast majority by Chinese, Iranian and Arab traders, raiding these caravans or demanding protection money - and the Black death main artery of distribution was the Silk Road.
The Mongols did not posses administrative capabilities - aside from those they partially in-cooperated from the previous independent territories - especially in regards to China.
Their traditional ruling scheme was to raid and pillage - then distribute that bounty in order to gain loyalty from their warriors and chiefs. This is the reason why from 1248 onward they continuously attacked/raided the provinces they had already raided before and made war against each other - thus continuously draining their bounty-income source and their warrior numbers.
Regarding the timeline of the Black -death; in 1330 it started to appear in China and Mongolia - and by 1350 had spread into the Middle-east and Europe. Hence the people or person you seem to refer to is e.g. Timur Lane - and this fellow wasn't a Mongol but from the Turkic people living in today's Uzbekistan, their capital being Samarkand.
The actual Mongol Blitzkrieg towards the West lasted from 1206-1260 - whereby it took the Mongols 70 years 1206- 1278 to conquer and defeat China aka the Song Dynasty.
As such their was no Blitzkrieg at all in regards to China.
Millions of Chinese died during these 70 years - not to mention how many of those 3 million forced to build the Great Canal during the reign of Kublai Kahn. And from 1290 to 1368 countless uprisings/ revolutions and wars occurred, again resulting in millions of death.
So this non -source - claim of 700 executions/year is irrelevant and certainly incorrect. What you might refer to is the new law codex instituted by Kublai Kahn in 1280, that had reduced around 350 crimes, defined to be punishable by death during the Song Dynasty to 180.