The proper name for Ruili is the Burmese "Shweli " , the title Foggy City comes from the Dai language . In the 10 years Ruili has become a fast-growing , rough-and tumble boom town with arrivals every day from all over China , people with a dream of finding riches . It is common in a restaurant or gathering to find Chinese from Liaoning , Shangdong , Fujian , Guangdong or Sichuan . Burmese with short-term travel permits stream into Ruili , most to conduct petty trade or find a buyer for a few gems and pieces og jade . Arms dealers and drug men are hear too . Bangladeshies , Nepalis and Pakistanis occasionally turn up.