[1]Sanya Aviation and Tourism College;
Sanya 572000;
Hainan;
China;
[1]Sanya Aviation and Tourism College;
Sanya 572000;
Hainan;
China;
[2]Information and Technology School;
Hainan University;
Haikou 570228;
Hainan;
China;
[2]Information and Technology School;
Hainan University;
Haikou 570228;
Hainan;
China;