Shijie Xu — BlogBioinformatics, computational chemistry, deep learning, and mathematics.https://xu-shi-jie.github.io/blogs/2026-06-30T00:00:00ZShijie XuHow does a protein catch a metal? Teaching a computer to find the spot — in secondshttps://xu-shi-jie.github.io/blogs/2026-06-16-prime.html2026-06-16T00:00:00Z2026-06-30T00:00:00ZHow PRIME, our deep-learning method, finds protein metal-binding sites by scattering virtual probes — accurate across 14 metal ions, in ~11 seconds each.2026 年高考数学压轴题：函数与集合 D(x₀)https://xu-shi-jie.github.io/blogs/2026-06-08-gaokao-math.html2026-06-08T00:00:00Z2026-07-02T00:00:00Z2026 年高考数学卷最后一题。已知 f(x) 在 R 上有定义、x<0 时 f(x)=2^x，围绕集合 D(x₀) 证明 f(0)≥1 以及 f 在 [0,+∞) 上单调递增。