I always just type ngzhou and put whatever letter is needed at the beginning, trying different vowels, and if that doesn't work, then eliminate the "g" and try again. I first tried zangzhous and then zengzhou and I got credit for that one. Gungzhou, Hangzhou, Tengzhou, Wengzhou, Changzhou, Yangzhou, Wenzhou, Quanzhou, Lanzhou, etc.
Dozens of roads, railways and expressways pass through the city. Also in the center part of the eastern part of China, like Chicago is in the Midwest of the US.
And for sure , there can be a better hint for Pyongyang than "Kim Jong Un's city".