TY JOUR TI THE MAIN DIRECTIONS OF DIGITALIZATION OF SERVICES TOURISM INDUSTRY IN CHINA, CAUSED BY THE CHALLENGES OF THE EXTERNAL ENVIRONMENT KW tourism industry KW international tourism KW domestic tourism KW environmental challenges KW digitalization of tourism services KW virtual tourism JO Trade, service, food industry AU Moiseenko, I.V. PY 2022 IS 2 PB Siberian Federal University