printf("Hello World");

Though I'm quite satisfied showing my work on GitHub, it turns out that I have much more to show. For example, GitHub is extremely unfriendly to show .pdf files since the internal link (we call it $\texttt{hyperlink}$ for those $\LaTeX$ freaks) doesn't work. This kind of problem arises quite often. Besides, my only hobby these days is photographing, and as you can imagine, it's awkward to show your photos there...

Apart from all these, since I use $\LaTeX$ a lot, the only way I know how to render $\LaTeX$ formulas on GitHub is ugly with a bunch of limitations. Hence, this pushed me to build this website eventually. To demonstrate, we can easily print out some beautiful formulas like

$\lim_{r \to 0} \frac{1}{m(B(x, r))}\int_{B(x, r)}\left\vert f(y) - f(x) \right\vert\,\mathrm{d}y = 0 \text{ for a.e. \(x\)}$

for $f\in L^1$.¹