Help with nginx configuration

[syy110112]

i have 2 input page index.html 、admin.html，it have 2 router and use history mode，and i use nginx publish，when refresh page it will be 404，so i change nginx setting like this
location / {
try_files $uri $uri/ /index.html;
}
but new problems arose，the setting is index.html，so when i access admin.html and refresh it will change to index.html
now i use hash mode can solve this problem，but i still want to use history mode