New Blog hugo new content posts/new-post.md Math 行内数学公式：$a^2 + b^2 = c^2$ 块公式 $$ a^2 + b^2 = c^2 $$ $$ \boldsymbol{x}_{i+1}+\boldsymbol{x}_{i+2}=\boldsymbol{x}_{i+3} $$ push to github git pull git add -A git commit -m "new post" git push -u origin main