This is the 4241st most frequent Russian word.
читинского
"Chitinskogo" is the genitive form of "Chitinsky," meaning "of Chita" or "related to Chita," a city in Russia.
"читинского" is used as an adjective to describe "художника" (artist) as being from Chita.
В музее была выставка читинского художника.
In the museum, there was an exhibition of a Chita artist.
"читинского" qualifies "района" (region), indicating it pertains to Chita.
Мы обсудили герб читинского района.
We discussed the emblem of the Chita region.
Here, "читинского" is describing "края" (region), showing possession or relation to Chita.