With this version of the air flight, in order to avoid problems in China, I advise you to issue a two-fold Chinese visa, since a 24-hour visa-free transit does not provide for all the way to travel through the territory of China, even by air, that is, if you flew through one point in China by international flights, a Chinese visa would not be needed, since you would not leave the transit zone of the airport, and in your case in Urumqi will have to pass passport, customs control .In many forums on the Internet, referring to explanatory letters from the immigration services of the PRC to some Russian airlines, it is said about the possibility of flying through several Chinese cities without obtaining a visa, provided that they stay in the country for less than 24 hours, but if we turn to the source (n ±​​$ br >.8 of the Law "On management of entry and exit of foreign citizens"), there is mentioned only one point of transit and nothing is said that a foreign citizen can follow transit through several cities of China: english .gov .cn .

On the website of China Southern Airlines in the section "Travel Documents" it is stated that visa-free transit does not apply to passengers traveling to a third country through several Chinese cities. (Important: Passengers with a China domestic flight before traveling on the third country are unable to make use of the 72-hour visa-free transit policy: www.csair.nl.