system
A chat on subreddit /r/wallstreetbets
human
&gt;Js like Ks? example? is this the old-timey one that has Mao's last name as 'Tse-Tung'? 
  
 yes, Beijing in Wade-Giles is 'Peking' even though English speakers have no problem pronouncing the B or J sound. It makes it less accurate for no reason.

gpt
Oh, I thought Peking came from a different dialect or something (maybe Cantonese?).