only show three items in home page
only show three items in home page

ZhiruiLi/ZhiruiLi.github.io,ZhiruiLi/ZhiruiLi.github.io,li-zhirui/li-zhirui.github.io,ZhiruiLi/ZhiruiLi.github.io,li-zhirui/li-zhirui.github.io,li-zhirui/li-zhirui.github.io