Buryat people, Kalmyak people and Tuvans are indigenous people.
(b) 雪山狮子旗 Flag of Tibet
en.wikipedia.org/wiki/Flag_of_Tibet
(also known as the 'snow lion flag'; Designed with the help of a Japanese priest, it reflects the design motif of Japanese military's Rising Sun Flag--in the 1920s;
* Rising Sun Flag
en.wikipedia.org/wiki/Rising_Sun_Flag
(旭日旗 Kyokujitsu-ki; caption of flag 2: War flag of the Imperial Japanese Army (1870–1945))