If I were able to go back to the past in a time machine,I would choose a certain dynasty,buy some chinaware,lacquerware and bronze and bury them somewhere.Then I'd return to the present,dig them and sell them. 用的是虚拟语气
If I could come back one of ancient period by time machine, I would buy some chinas,lacquers and bronzes or something elses,then bury them,and come back the nowadays and dig them out ,then sell them
If I were able to go back to the past in a time machine,I would choose a certain dynasty,bought some ware like china ,lacquer or bronze ware.. and buried them somewhere.Then I'd return to the present,digged them up and sold them.